?hydroxyl

hydroxyl發(fā)音

英：[ha?'dr?ks?l]　　美：[ha?'dr?ks?l]

英：　　美：

hydroxyl中文意思翻譯

羥基, 氫氧根

hydroxyl詞形變化

形容詞: hydroxylic |

hydroxyl常見例句

1 、Under this conditon, is it possible to produce hydroxyl or carboxyl on the surface of oxide?───在這種情況下，能在氧化物表面產(chǎn)生羥基或羧基嗎？

2 、The LCST of all polymers was determined, and LCST will rise via increase of the OH content in hydroxyl PVME.───實(shí)驗(yàn)還對(duì)各種產(chǎn)物做了LCST測(cè)定和1H-NMR分析，研究了PVME的羥基含量對(duì)LCST的影響。

3 、The results of colorimetric assays showed that these compounds effectively scavenged hydroxyl radical and super anion radical.───化學(xué)比色法的結(jié)果顯示這些化合物對(duì)羥自由基和超氧陰離子自由基有較好的清除作用。

4 、As open-chain hydroxy aldehydes and hydroxyl ketenes, the monosaccharides are very reactive.───以開鏈的羥基醛和羥基酮形式 存在的單糖非?；顫?。

5 、It is seen that all secondary hydroxyl groups are on carbon atoms having four different substituents attached to them.───可見所有次級(jí)羥基都在一個(gè)碳原子上,這個(gè)碳原子有四個(gè)不同基團(tuán)與它連接。

6 、The hydroxyl ion has a negative charge.───氫氧根離子有一個(gè)負(fù)電荷。

7 、The H2O2 also is a precursor of the highly reactive hydroxyl radical, which participates in wood degradation.───H2O2也是具有高度反應(yīng)活性的羥基游離基的前體,并參與降解過(guò)程。

8 、Dihydroflavonol is another kind of flavone in which 2,3-position is a single bond and 3-position is substituted by hydroxyl.───二氫黃酮醇是指2,3位為單鍵,3位有一羥基取代的一類黃酮化合物,研究表明此類化合物很多都具有很好的抗氧化、保肝護(hù)肝、降血脂、抗腫瘤等藥理活性。

9 、The different DH of walnuts peptides has different ability to scavenge hydroxyl radicals.───不同水解度的蛋白多肽清除羥自由基能力不同,結(jié)果表明水解度5%時(shí),自由基清除率最高可達(dá)50.90%。

10 、The phenol hydroxyl group was considered to playa key role in increasing the differenc of interaction between the two isomers and the chiral stationary phase.───拆分過(guò)程為焓驅(qū)動(dòng)，酚羥基對(duì)提高二異構(gòu)體與手性固定相之間的作用差異起關(guān)鍵作用。

11 、An anhydride formed by the removal of a water molecule from the hydroxyl and carboxyl radicals of hydroxy acids.───內(nèi)酯一種通過(guò)從酸的羧基中除去一個(gè)水分子而形成的脫水物

12 、This kind of medicaments has stable, chloric nitrogen, go armour hydroxyl stable, nitro- fluorine is stable, stable etc.───此類藥物有安定、氯氮 、去甲羥基安定、硝基安定、氟安定等。

13 、Then according to whether the structure of acidic groups (mainly phenolic hydroxyl group), divided into phenolic and non-phenolic.───再根據(jù)結(jié)構(gòu)中是否有酸性基團(tuán)（主要指酚羥基），分為酚性和非酚性。

14 、IC50 of grape polyphenols on scavenging DPPH radical, superoxide anion radical and hydroxyl radical were 1.───本文對(duì)葡萄多酚抗氧化活性進(jìn)行研究。

15 、In addition, still but as a result of drinkWineOr take drug (like hydroxyl chloroquine) and cause toxic.───此外，還可由于飲酒或服藥(如羥基氯喹)而誘發(fā)中毒。

16 、We choose flavonol compounds with hydroxyl substituents on B ring and isoflavone compounds with hydroxyl substituents on A ring to study their 13C-NMR properties .───我們選取黃酮醇類化合物B環(huán)羥基取代和異黃酮類化合物A環(huán)羥基取代這兩個(gè)系列黃酮類化合物,對(duì)其核磁共振碳譜進(jìn)行理論計(jì)算。

17 、STUDY OF DEFLUORINE PROPERTIES OF POROUS HYDROXYL CALCIUM PHOSPHATE.───多孔羥基**酸鈣吸氟特性研究。

18 、PVPP has good appetency,It can remove the polyphenol efficiency through absorbing on surface by combination between the hydroxyl and carbonyl ?───PVPP通過(guò)酚羥基和羰基之間的氫鍵結(jié)合,進(jìn)行表面吸附,有效地去除多酚。

19 、The departing halide extracts a proton from the second water and the generated hydroxyl ligand reacts with the ethylene, while remaining in the coordination sphere of the metal.───分開的鹵化物從第二個(gè)水分子得到一個(gè)質(zhì)子，同時(shí)產(chǎn)生的羥基配合體與乙烯反應(yīng)，留在了金屬的配位區(qū)內(nèi)。

20 、THF copolymerized GAP is synthesised by the azidation of hydroxyl THF-ECH copoyethers.───b．端羥基THF-ECH共聚醚疊氮化生成THF共聚型GAP粘合劑。

21 、THE CHANGE OF HYDROXYL IN HORNBLENDE AT CONFINING PRESSURE 3Kb AND TEMPERATURE 700?───圍壓3千巴、溫度700℃時(shí)角閃石羥基的變化

22 、Having only one hydroxyl group to react with acids.───一元酸的只有一個(gè)可與酸發(fā)生反應(yīng)的氫原子團(tuán)的。

23 、A method for determining hydroxyl value of epoxy-containing polyester,namely acetyl chloride method is introduced.───介紹了一種含環(huán)氧基聚酯的羥值測(cè)定方法,即**氯法。

24 、Any of various alcohols containing two hydroxyl groups.───雙羥基醇含有兩個(gè)羥基團(tuán)的醇

25 、The extractants are introduced by five parts,such as monobasic alcohol,diol,mixed alcohol,hydroxyl amine and others.───把提硼的萃取劑分為一元醇、二元醇、混合醇、羥基胺和其他類5部分加以敘述。

26 、A further reaction produces an additional hydroxyl ion to maintain the attack on the network.───再進(jìn)一步反應(yīng)又形成一個(gè)外加的氫氧離子，它又繼續(xù)侵蝕網(wǎng)絡(luò)。

27 、Presents the development in decontaminating indoor chemical pollution.Explores a new method to decontaminate indoor air pollution with hydroxyl radical.───摘要介紹了消除室內(nèi)空氣中化學(xué)污染的凈化技術(shù)的研究進(jìn)展，探討了一種利用羥基自由基消除室內(nèi)空氣污染的高級(jí)氧化方法。

28 、Hydroxyl radical (OH) initiated photooxidation of toluene was carried out in a home-made smog chamber.───在煙霧腔內(nèi)進(jìn)行了羥基自由基啟動(dòng)的甲苯光氧化生成二次有機(jī)氣溶膠的實(shí)驗(yàn)。

29 、The effects of content of fluororesin,hydroxyl numbr of acrylic acid resin,content of curing agent and kinds of pigment on propert of top paint are discussed.───探討了氟樹脂用量,丙烯酸樹脂羥值,固化劑的用量和顏料種類對(duì)面漆性能的影響。

30 、Hydroxyl has an extremely oxidizing nature.───氫氧基具有極強(qiáng)的氧化特性。

31 、Ethylene gycol: thick liquid diol (a compound containing two hydroxyl groups) C2H6O2used especially as an antifreeze and in making polyester fibers.───乙二醇:較濃的液體二醇(包含兩個(gè)羥基的化合物)C2H6O2,通常用作防凍劑和制造聚酯纖維。

32 、In the liquid state. water molecules are highly associated because of hydrogen bonding.The hydroxyl and ether groups in glycols form similar associations with water molecules.───在液體狀態(tài). 水分子是高度伴生的由于氫接合.羥基和以太小組在甘醇形成相似的協(xié)會(huì)與水分子.

33 、Another end for the hydroxyl and the carboxyl group, has the water affinity.───另一端為羥基和羧基，具有親水性。

34 、MDMA abuse commonly occurs in combination with ethanol,and ethanol can increase hydroxyl radicals formation and serotonin neuronal damage.───MDMA常和乙醇合并濫用。乙醇可促使羥基自由基增多,并使5-羥色胺神經(jīng)元損傷加重。

35 、Jiang Qi-bin,Jia De-min,Yang Jun.Modification in situ of EPDM filled with carbon black by unsaturated hydroxyl fatty acid[J].China Elastomerics,2004,14 (2):25-29.───[5]姜其斌,賈德民,楊軍.不飽和羥基脂肪酸原位改性炭黑補(bǔ)強(qiáng)三元乙丙橡膠的性能[J].彈性體,2004,14(2):25-29.

36 、And we've got devices that can sniff out hydroxyl polybutadiene propellant deployed at all likely exit points.─── 我們有可以探測(cè)到羥基聚丁二烯推進(jìn)劑 的設(shè)備 并部署在所有可能的出境點(diǎn)

37 、NMR techniques were used to investigate the stereo configuration and conformation of the hydroxyl mesocyclic diamines and their derivatives in aqueous solution.───利用二維核磁共振技術(shù)對(duì)一類新的含羥基中環(huán)二胺及其衍生物在水溶液中的構(gòu)型和構(gòu)象進(jìn)行了較為詳盡的研究。

38 、The analysis of hydroxyl radicals in biological samples by ESR,HPLC and chemiluminescence method have been reviewed in this paper. 41 references were given.───本文著重對(duì)電子自旋捕集法、高效液相色譜法和化學(xué)發(fā)光法在羥自由基檢測(cè)中的應(yīng)用情況進(jìn)行了評(píng)述，引用文獻(xiàn)41篇。

39 、Chitosan is one of the most abundant natural polymers, this biopolymer has useful functional groups such as hydroxyl and amine, so it can interact with metal ions.───摘要?dú)ぞ厶鞘且环N天然高分子，分子中含有大量的氨基和羥基，對(duì)金屬離子有很好的吸附能力。

40 、Group H was infused with 6% Hydroxyl starch(HES) at a rate of 15 ml/kg before induction.───H組:誘導(dǎo)后30 min內(nèi)輸入羥乙基淀粉(HES)15 ml/kg。

41 、Compared with polyethylene as a standard sample,GAP has higher surface free energy because there are many hydroxyl groups and azide group in the surface of the GAP molecule.───與聚乙烯相比,GAP的總表面的自由能較高,這主要是因?yàn)镚AP表面含有羥基和疊氮基團(tuán)。

42 、It is maigre that to hydroxyl benzoic acid Yi Bingfu adds up to ester natrium and benzoic acid natrium?───對(duì)羥基苯甲酸乙丙復(fù)合酯鈉和苯甲酸鈉是不是素食？

43 、It will be more susceptible to attack by hydroxyl ion.───它更容易被氫氧根離子所作用。

44 、The new photometry for determination of hydroxyl radocals by using the reaction between the mixed rare earths and trace H 2O 2 has been established in this paper.───利用混合稀土與微量過(guò)氧化氫催化氧化二苯基碳酰肼,建立了萃取-催化氧化光度法測(cè)定過(guò)氧化氫的羥基自由基的新方法。

45 、The obtained material showed good affect to scavenging hydroxyl radials.───且該提取物對(duì)羥自由基有良好的清除效果。

46 、OBJECTIVE To investigate and compare the scavenging effect to hydroxyl radical of different extracts from the seeds of Hovenia acerba Lindl.───摘要目的比較枳椇子不同提取部位對(duì)羥自由基的清除作用。

47 、The amino resin will cross-link not only the alkyd but the hydroxyl portion of the vinyl terpolymer.───氨基樹脂不僅能和多元醇酸交聯(lián)，而且和乙烯三元共聚物中的羥基部分反應(yīng)。

48 、Hydroxyl third base amylum aether has strong thicken and stability,mainly be applied in ice cream,jam,jelly,nooning meat,soup material,drink and milk product.───應(yīng)用范圍： 羥丙基淀粉醚具有超強(qiáng)的增稠、穩(wěn)定能力，主要用于冰淇淋、果醬、果凍、午餐肉、湯料及奶制品中。

49 、Containing the hydroxyl group.───氫氧化物的含氫氧基化合物的

50 、Ethanol (grain alcohol) and methanol ( wood alcohol ) are the Best-known alcohols with one hydroxyl group.───乙醇(酒精)和甲醇(木醇)是最有名的醇類,含有一個(gè)羥基。

51 、METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.───方法將厚樸酚兩羥基用縮酮保護(hù),再用正己烷重結(jié)晶分離純化。

52 、Chitosan is one of the most abundant natural polymers,This biopolymer has useful functional groups such as hydroxyl and amine,so it can interact with metal ions.───殼聚糖是一種天然高分子,分子中含有大量的氨基和羥基,對(duì)金屬離子有很好的吸附能力。

53 、But urushiol has a poor resistance to alkali because phenol hydroxyl of urushiol shows weak acidity.───但是,由于漆酚的酚羥基顯弱酸性,使得漆酚耐堿性較差;

54 、The hydroxyl groups can be changed into esters, ethers, acetals and ketals, etc.───最常用的羥基保護(hù)基可歸納為三類：酯類、醚類和縮醛或縮酮類。

55 、Polyvalent Metal Hydroxyl Complexes.───多價(jià)金屬羥基絡(luò)合物;

56 、The mechanism responsible for the neurotoxicitg of MDMA is probably associated with hydroxyl radical formation.───其神經(jīng)毒性作用機(jī)制可能和羥基自由基的形成有關(guān)。

57 、The silanol groups then condense with oxide or hydroxyl groups on the filler surface (see Figure 1).───接著硅醇基團(tuán)與填料表面的氧化物或者羥基發(fā)生縮合反應(yīng)（見圖1）。

58 、It consists of many glucose units, in each of which one of the hydroxyl groups has been replaced by an acetylamine group (CH3CONH).───包括許多的葡萄糖單元，每個(gè)單元的羥基都被**基取代。

59 、The mono-component phthalate agent method is not stable for determining hydroxyl value of wood solution.───在使用單組分?；噭y(cè)定木材溶液羥基值時(shí),數(shù)據(jù)穩(wěn)定性差。

60 、Halogen radicals produced by the reaction of hydroxyl radicals with halides, such as HX, may serve as terminators for the chain reaction.───鹵素自由基是由羥基自由基與鹵化物如HX反應(yīng)而產(chǎn)生的,它可被用作連鎖反應(yīng)的終止劑。

61 、As substrate is reintroduced neutrophil activity may heighten increasing production of damaging superoxide and hydroxyl radicals.───再次導(dǎo)入酶解物，嗜中性細(xì)胞活動(dòng)增強(qiáng)，增加破壞性超氧游離基和羥基的生產(chǎn)。

62 、The scavenger activities of methyl salicylate towards the hydroxyl radical and its reaction mechanism were studied using pulse radiolytic technique and general test method.───利用脈沖輻解技術(shù)研究了水楊酸甲酯清除羥基自由基反應(yīng)的瞬態(tài)吸收譜,測(cè)定了水楊酸甲酯與羥基自由基反應(yīng)的表觀速率常數(shù)。

63 、Title： Study of hydroxyl content of omphacite in UHP-eclogite from the main hole of Chinese Continental Scientific Drilling Project.───關(guān)鍵詞：綠輝石;榴輝巖;結(jié)構(gòu)水含量;中國(guó)大陸科學(xué)鉆探工程

64 、In these methods, the halogenation of compounds containing hydroxyl group was particularly summarized.───在這些方法中，側(cè)重總結(jié)了含有羥基官能團(tuán)的有機(jī)化合物。

65 、Both the free hydroxyl groups readily undergo esterification.───兩個(gè)自由羥基，都容易酯化。

66 、The hydroxyl silicate was surface-modified and dispersed in water, and mixed with water-soluble lubricant by different proportion.───將羥基硅酸鹽通過(guò)表面修飾分散在水中,并與不同比例的水溶性潤(rùn)滑劑進(jìn)行復(fù)配。

67 、This paper mainly introduces the inhibition function of manganese and manganese porphyrins to superoxide and hydroxyl radicals, lipid peroxidation.───介紹了錳及錳卟啉對(duì)超氧化物、羥化自由基、脂質(zhì)過(guò)氧化等自由基的抑制作用,并初步討論了它們的作用機(jī)理。

68 、Abstract : Recent advances is enzymatic deprotection reactions of amino groups, carboxyl groups, thiol groups and hydroxyl groups are reviewed.───摘要 ： 系統(tǒng)地介紹和評(píng)述了近年來(lái)氨基、羧基、巰基和羥基等到基團(tuán)的酶催化脫保護(hù)方法的進(jìn)展。

69 、In order to make the wool fabric obtain better smooth feel,the hydroxyl silicone oil was carried out to finish wool fabric.───為使羊毛織物獲得較好的平滑手感,采用羥基硅油平滑劑對(duì)羊毛織物進(jìn)行平滑整理并對(duì)整理工藝進(jìn)行了探討。

70 、The effects of hydroxyl MWNTs and carboxyl MWNTs on efficiency of enthalpy were higher than that of MWNTs with the same contents.───當(dāng)多壁碳納米管的含量相同時(shí)，含有官能團(tuán)化多壁碳納米管的正十八烷的熱焓效率低于常規(guī)多壁碳納米管體系。

71 、It is based upon a naturally occurring enzyme called urease that essentially reverses the urea cycle by breaking down urea into metabolites that include ammonia and hydroxyl ions.───它是根據(jù)自然產(chǎn)生的尿素酶，基本上扭轉(zhuǎn)了尿素循環(huán)打破尿素成氨的代謝物，包括羥基離子。

72 、The SG copolymer can react efficiently with the amide and carboxyl group of PA6 as well as the hydroxyl group of PPO in blending process, resulting into graft copolymer.───SG共聚物能夠有效地與尼龍6分子鏈端的胺基、羧基和聚苯醚分子鏈端的羥基發(fā)生反應(yīng)，生成接枝共聚物。

73 、The surface physicochemical properties of hydroxyl terminated polybutadiene (HTPB) were studied by means of inverse gas chromatography (IGC).───摘要采用氣相反相色譜技術(shù)(IGC)研究了端羥基聚丁二烯(HTPB)粘合劑的表面物理化學(xué)性質(zhì)。

74 、Containing two hydroxyl radicals.───二羥基的包含兩個(gè)羥基的

75 、A hydroxyl ammonium sulfate (HAS) accelerated phosphating process has been studied.───對(duì)內(nèi)含羥胺促進(jìn)劑的**化工藝進(jìn)行了研究。

76 、It was shown that the carbon functional group contained a very small amount of graphitized carbon and some ether or hydroxyl group.───含氧官能團(tuán)中無(wú)機(jī)氧含量較低,有機(jī)氧含量相對(duì)較高.隨著燃燒的進(jìn)行,顆粒表面碳、氧官能團(tuán)呈現(xiàn)不同的變化趨勢(shì).

77 、Abstract : Ring-opening of two types of N-tosyl aziridines with hydroxyl compounds has been studied.───摘要 ： 本文研究了羥基化合物對(duì)兩種類型N-對(duì)甲苯磺?；s環(huán)丙烷的開環(huán)反應(yīng)。

78 、The scavenging of melanin to hydroxyl free radicals was studied by fluorometry.───利用熒光光度分析法研究了黑色素對(duì)羥基自由基的清除活性。

79 、Diglycerol has a lower hydroxyl number than glycerol, which imparts a lower water binding ability upon the product.───雙甘油分子的羥基密集度要比甘油低，這相對(duì)降低了結(jié)合水的能力。

80 、The interaction between carboxyl anions in gelatin chains and MMT is strong.The hydroxyl groups are the interactive sites on MMT.───明膠分子鏈上的羧基負(fù)離子可以和蒙脫土產(chǎn)生較強(qiáng)的相互作用，蒙脫土上的羥基是與明膠相互作用的反應(yīng)位點(diǎn)。

81 、The hydroxyl and carboxyl,belonging to auxochromic groups,were oxidized into the carbonyl and ester groups.───[方法]通過(guò)對(duì)刺槐木材變色前后丙酮抽出物的定性分析,得出變色前后丙酮抽出物的主要成分,進(jìn)行對(duì)比分析,初步得出抽出物對(duì)誘發(fā)變色的作用。

化學(xué)oh是什么意思

OH是化學(xué)中的一個(gè)術(shù)語(yǔ)，指羥基基團(tuán)（hydroxyl group），這是一個(gè)由氫和氧組成的一元醇官能團(tuán)。當(dāng)一個(gè)物質(zhì)中含有OH官能團(tuán)時(shí)，我們稱其為“含羥基的物質(zhì)”。OH官能團(tuán)在許多有機(jī)化合物中出現(xiàn)，比如醇、酚等，這些物質(zhì)通常具有一些特殊的物理和化學(xué)性質(zhì)。

OH官能團(tuán)在有機(jī)化學(xué)中具有很重要的作用。首先，它可以使物質(zhì)變得更加親水，因?yàn)檠鹾蜌涞碾娦圆町愂筄H官能團(tuán)帶有極性。另外，OH官能團(tuán)的羥基可以與其他化合物發(fā)生酸堿反應(yīng)，這使得這一官能團(tuán)在很多生物和化學(xué)過(guò)程中扮演了重要的角色。

OH官能團(tuán)具有很多應(yīng)用價(jià)值。比如，在有機(jī)合成中，人們可以通過(guò)加氫反應(yīng)、氧化反應(yīng)等方法引入OH官能團(tuán)，從而合成含羥基的物質(zhì)。有些人工合成的藥物中也含有OH官能團(tuán)，例如阿司匹林。此外，OH官能團(tuán)還可以被用于制造一些化學(xué)品和染料。

“羥值”是代表什麼意思

羥值(Hydroxyl value)

在膠黏劑的性能中,只有環(huán)氧樹脂、聚脂多元醇與聚醚多元醇及聚氨脂膠黏劑等對(duì)羥值有要求.

環(huán)氧樹脂羥值是表示100g環(huán)氧樹脂中所含的氫氧基的摩爾數(shù).而羥基值表示含有1mol羥基的環(huán)氧樹脂質(zhì)量克數(shù).二者之間的關(guān)系為:羥基值=100/羥基.羥值的測(cè)試都是酸酐反應(yīng)做基礎(chǔ)的,以被消耗的酸酐量測(cè)試出羥基含量.對(duì)于環(huán)氧樹脂而言,由于環(huán)氧基的干擾,使羥基的測(cè)試復(fù)雜化,采用通常的**化法是達(dá)不到目的的.目前采用的一種是直接測(cè)試環(huán)氧樹脂的羥基含量;另一種是使環(huán)氧基開環(huán)形成羥基,并進(jìn)一步測(cè)出羥基含量總和.對(duì)高分子量環(huán)氧樹脂如果知道其羥值大小,就可以計(jì)算出它的分子量大小,羥值高,分子量大;反之則小.

在聚氨脂膠黏劑中多以聚酯型聚氨酯居多.在聚酯多元醇的合成過(guò)程中,利用羥值與酸值的測(cè)試來(lái)監(jiān)控合成反應(yīng)程度，而且又是檢驗(yàn)樹脂分子量是否符合產(chǎn)品出廠要求的有效方法.另外,在聚氨酯膠黏劑生產(chǎn)時(shí),羥值與酸值大小,又是異氰酸酯加入改性的重要依據(jù).羥值是聚合物羥基含量的量度,它可以直接反映出聚合物的分子量的大小.同一原料生產(chǎn)的聚酯多元醇,其羥值不同,用途也不一.羥值是衡量它的一個(gè)重要指標(biāo).對(duì)聚酯多元醇,不飽和聚酯樹脂與聚醚多元醇,羥值的定義是每克試樣中羥基含量相當(dāng)?shù)臍溲趸浐量藬?shù)(mgKOH/g)即為羥值.