?isotope

isotope發(fā)音

英：[?a?s?t??p]　　美：[?a?s??top]

英：　　美：

isotope中文意思翻譯

n.同位素

isotope詞形變化

副詞: isotopically | 形容詞: isotopic |

isotope常見例句

1 、The result of isotope in the inclusion show the （ D value is high, so the filled matter formed under the hot-bittern surroundings.───包裹體同位素分析結(jié)果顯示溶蝕孔、縫充填物的（D值較高，形成于氘富集的熱鹵水環(huán)境。

2 、It is about 7000 million years old measured by isotope geological method.───假如該坑與上述三個隕石坑是同一系列的外來天體撞擊地球事件。

3 、Secondly, the Os concentration and residence time in seawater, and Os isotope composition of seawater were precisely measured.───對海水中鋨的濃度、滯留時間 ,以及現(xiàn)代海水的鋨同位素組成進行了精確測定 ;

4 、So if supersymmetry is true, there should be less of this isotope around than the Standard Model predicts.───因此，如果對超對稱性確信無疑，那么宇宙空間中元素同位素的存在就會比標準模式預測的要少。

5 、China Isotope and Radiation Association (CIRA) was founded in April 1989.It is a non-profit economic-social organization.───中國同位素與輻射行業(yè)協(xié)會是1989年4月成立的全國性社會團體法人組織。

6 、It would take many months of follow-up work in shore-based laboratories, including critical isotope geochronological work, to confirm our findings.───回到岸上的實驗室后，還需要好幾個月進行后續(xù)的研究工作以確認我們的發(fā)現(xiàn)，其中包括必備的同位素定年工作。

7 、The experiment involved irregular ion movement theory and isotope theory.───兩國的人民白天黑夜都能聽到間歇的炮擊聲。

8 、A radioactive isotope of thorium with mass number228.───射釷釷的放射性同位，質(zhì)量數(shù)為

9 、Two ways of automatic melting steel surface checking and measuring are introduced: eddying flow and isotope,as well as their application in Tang Steel.───介紹了渦流法和同位素法2種結(jié)晶器鋼水液面自動控制檢測方式,及其在唐鋼板坯連鑄機的應用。

10 、The isotope ratio is directly used for comparing oils or gases.───同位素比率直接用于比較各種石油或天然氣。

11 、Measurement of kinetic isotope effects indicated that the rate-limiting step of these reactions is the C(sp 2 )-H bond cleavage.───動力學同位素效應測量表明限速步驟,這些反應是在C(藻2)-八鍵裂解.

12 、A densimeter with radioactive isotope beseemed experiment teaching for speciality of nuclear engineering and nuclear technology in higher education is presented.───摘要提出了一種適合于施工程與核技術(shù)專業(yè)本科生實驗教學的放射性同位素密度計。

13 、German researchers recently uncovered an isotope of iron known as iron-60 in ocean bed samples laid down about two million years ago.───德國研究人員最近在大約于200萬年前沉入海底的樣本中發(fā)現(xiàn)了一種鐵的同位素--鐵60。

14 、For in ordinary uranium there is much more of the U238 isotope than there is U235 and, as you know, U238 will not undergo fission easily.───因為在普通鈾中，鈾238同位素要比鈾235多得多，而且正如你所知，鈾238不易裂變。

15 、Isotope: One of two or more species of atoms of a chemical element having nuclei with the same number of protons But different numbers of neutrons.───同位素:一種化學元素的兩個或多個類型,它們的原子核具有相同的質(zhì)子數(shù),而中子數(shù)卻不同。

16 、I've studied the xenon isotopes. 135 doesn't exist.─── 我研究過氙的同位素 自然界不存在氙135

17 、Changes of nuclear mass and nuclear size cause isotope shifts.───原子核質(zhì)量和大小的不同引起同位素移動。

18 、And in oxygenic isotope 1st phase, cause of the postglacial period transgression, most of them is the semi-saltwater environment of estuary area.───在氧同位素1期，發(fā)生冰后期海侵，多為入海河口區(qū)的半咸水環(huán)境。

19 、Today, most cyclotrons are used either for instructional purpose or for isotope production.───今天大多數(shù)回旋加速器是用在教學上，或者用于同位素生產(chǎn)。

20 、A unit of radioactivity, equal to the amount of a radioactive isotope that decays at the rate of3.7?010 disintegrations per second.───居里放射性強度單位，相當于一秒鐘內(nèi)發(fā)生3。7?010次裂變

21 、The atmospheric helium isotope ratio: Is it changing?───大氣氦同位素比率在變化嗎?

22 、The isotope analytic technique of the agrochemical remainder is increasingly valued by people, and has made a substantial development.───農(nóng)藥的同位素殘留分析技術(shù)日益受到人們的重視,并取得了長足的發(fā)展。

23 、Its most common form, or isotope, has 146 neutrons.───它最常見的形式或者同位素有146個中子。

24 、Ye no, we are shut to trauma. Isotope contamination.─── 不 創(chuàng)傷室封閉 放射性元素污染

25 、The results of groundwater isotope analysis show that the groundwater in the Yinchuan Plain has different recharge patterns.───摘要地下水同位素特征表明銀川平原地下水具有不同的補給模式。

26 、Statistical analysis with SPSS10.0.ResultsEffect of anti - Fas Ab on the activity of ERK by isotope:The activity of ERK increases to the peak at 30min of anti - FasAb treatment.───利用同位素法檢測ERK酶活性結(jié)果顯示：抗Fs抗體孵育后，ERK活性明顯升高，30min達高峰。

27 、On the basis of the method, the optimization of the fringing magneticfield for a large-scale electromagnetic isotope separator is finished.───利用上述方法完成了一臺大型電磁同位素分離器邊緣磁場的優(yōu)化。

28 、The halflife on the isotope is already expired.─── 同位素的放射性半衰期早過了

29 、Using 14C isotope trace and SDS-PAGE etc techniques research remobilization of carbon assimilate and compensative effects, and the relation of water and quality.───利用~(14)C同位素示蹤和SDS-PAGE等技術(shù)對不同水分虧缺下碳同化物再動員與補償效應、及水分與品質(zhì)的關(guān)系做了初步探討。

30 、Title： Dynamic model for Pb isotope evolution in the continental crust of China.───關(guān)鍵詞：鉛同位素;動力學演化;中國大陸;上地殼;下地殼;地幔

31 、We'll have some laughs, we'll calculate some isotope ratios.─── 我們會一起歡笑 一起計算同位素比值

32 、An hour later the next lighter stable isotope, xenon 134, appeared.───一小時之后，略輕一點的穩(wěn)定同位素氙134出現(xiàn)。

33 、At present,the methods of isotope tracer and turbine flowmeter are universally used for testing annulus well in home oilfield.───同位素示蹤法和渦輪流量計法是目前國內(nèi)各油田普遍采用的環(huán)空測井方法。

34 、They've deployed a radioactive isotope in your bloodstream.─── 你血液里被植入了放射性同位素

35 、The PET scan identified focal areas of high uptake of isotope in 11 of the 12 cases of focal disease.───PET掃描確定了12例病灶疾病中的11例有同位素高吸收的病灶部位。

36 、Simmons: Get me a sample and some isotope readings.───弄些樣本和同位素讀數(shù)。

37 、The results suggest that carbon isotope is very useful for Early Proterozoic carbonate strata correlation.───作者認為，碳同位素對于早元古代碳酸鹽地層的對比是很有用的。

38 、Making use of isotope to research the essential of QDBS,which develope a new approach for TCM syndrome.───應用同位素顯像研究氣虛血瘀證的本質(zhì)特征，為影像辨證學開辟了一條新途徑。

39 、Provides isotope data for almost all known nuclides. From Berkeley Laboratory.───為每個元素提供盡可能的同位素相關(guān)數(shù)據(jù)。

40 、Title： Hydrogen and oxygen isotope geochemistry of high to ultrahigh pressure metamorphic rocks from Southeast Dabie.───關(guān)鍵詞：大別山;超高壓;變質(zhì)巖;氫同位素;氧同位素;水-巖相互作用

41 、A Archaeozoic granulite with an isotope age(Sm-Nd isochoron) of 3450 Ma,was found firstly in Proterozoic Dakendaban Group in eastern north margin of Qaidam Basin.───在柴達木盆地北緣東段,首次從古元古代達肯大坂巖群中發(fā)現(xiàn)太古宙麻粒巖,并取得3450Ma Sm-Nd等時線同位素年齡。

42 、Isotope shifts and hyperfine structure spectrum[J].───引用該論文 馬洪良.

43 、So,there should be less of this isotope around than the Standard Model predicts.───所以，目前鋰同位素的含量應該比標準模式預測的少。

44 、To determine the content of Chloramphenicol(CAP) in honey using stable isotope dilution technique.───建立穩(wěn)定同位素稀釋技術(shù)測定蜂蜜中氯霉素(CAP)分析方法。

45 、The authors present carbon isotope data of organic matter in Co-rich ferromanganese crust from central Pacific seamount area.───富鈷結(jié)殼組成與生長環(huán)境之間的關(guān)系研究對這種未來資源的準確評價和合理利用有重要意義。

46 、The method of determining Ni, Cu and Pbi n urine with isotope dilution mass spectrometry(IDMS)is described.───介紹了采用同位素稀釋質(zhì)譜法（IDMS）測定凍干人尿樣品中鎳、銅、鉛的含量。

47 、According to the clear geologic relation and information related about the isotope, the Neozoic volcanic activity can be divided into 10 stages.───據(jù)野外清晰的地質(zhì)關(guān)系,結(jié)合同位素年齡資料,研究區(qū)內(nèi)新生代火山活動可分為10期火山噴發(fā)。

48 、MTT method was used to detect the influence of PDGF-BB on the proliferation of fibroblasts and compared to the routine isotope method.───探討血小板衍生生長因子(PDGF)促進慢性、難愈合傷口的愈合速度的機理。

49 、Tell-tale isotope signatures of what we eat and drink are found throughout our bodies in bones, fingernails and hair.───我們吃吃喝喝中留下了同位素簽名的證據(jù)在我們的骨骼、手指甲及毛發(fā)中被發(fā)現(xiàn)。

50 、There are differences between natural and adulterated juices in stable isotope ratio.───天然果汁與摻假果汁之間在穩(wěn)定同位素比率方面存在著差異。

51 、I'll need more than one to stabilize the isotopes.─── 要穩(wěn)定同位素我需要更多電池

52 、No sign of the isotopes, but take a look at this.─── 沒發(fā)現(xiàn) 不過你看一下這個

53 、We've got a visible heat signature from the isotopes.─── 我們查到有同位素的熱信號

54 、In this case the geologists drilled into the stalagmites and estimated their age from the way that uranium decays into an isotope of thorium.───地質(zhì)學家在石筍上鉆孔，使用鈾衰變成釷的同位素的方法確定它們的年齡。

55 、According to the characteristics of trace elements and isotope, the source of the basalt is similar to the OIB source.───微量元素和同位素特征顯示,玄武巖起源于與洋島玄武巖源區(qū)相似的富集地幔源。

56 、Fractionation effect of coalbed gas is a phenomenon that gas composition and isotope change during the process of migration.───摘要煤層氣的分餾效應是指運移過程中氣體組份和同位素值發(fā)生變化的現(xiàn)象。

57 、More than two tons of this plutonium isotope were generated within the Oklo deposit.───在歐克陸礦床中，有超過兩公噸的鈽同位素形成。

58 、The selection of the desired species(element, isotope, and charge state)is certified by the signature of the entire mass spectrum.───所需物質(zhì)（元素、同位素及電荷態(tài)）的選擇，被全部質(zhì)譜的信號特征所證實。

59 、The authors propose an E 2 elimination mechanism in which the cinchona alkaloid acts as a chiral base in consistency with measured isotope effects.───作者提出了電子二是淘汰機制金雞生物堿手基地作為衡量符合同位素效應.

60 、Its methane carbon isotope is heavier than -40‰ , ethane carbon isotope is heavier than -28‰ .───其甲烷碳同位素值均大于-40‰,乙烷碳同位素值大于-28‰。

61 、We can talk about the half-life of a radioactive isotope, and indeed we can measure and state very very precisely what that half-life is.───我們可以談論放射性同位素的半衰期，我們確實可以非常準確地測量和描述半衰期是什么。

62 、An obvious restraint in the use of isotope ratios results from the need to employ mass spectrometers.───使用同位素比值法有著一個明顯的局限因素，就是要用質(zhì)譜儀進行分析。

63 、The excretion of the isotope in urine and faeces mainly occurred on the first day, and was 7.7% and 68.2% respectively of the administered dose.───尿和糞中排出的放射性主要集中在給藥后的第1天,分別為給藥量的7.7%和68.2%。

64 、Abstract The isotope fractionation effect is primary factor affecting accuracy of hydrogen isotope analysis.───摘要 同位素分餾效應是影響氫同位素準確分析的主要因素。

65 、Thermal cycling absorption process(TCAP),a semi-continuous hydrogen isotope separation process,is of many unique advantages.───對熱循環(huán)吸附法(TCAP)全回流模式和生產(chǎn)模式下的氕-氘分離實驗進行了研究。

66 、For example, by GIS thematic map and overlaying analysis every factor is visualized to administer to sample design of isotope investigation.───例如，通過制作gis專題圖并進行疊加分析，可視化地展示各類因素的影響，輔助了同位素研究的布樣設(shè)計。

67 、When the commonest isotope of iron (56Fe) absorbs a neutron, the result is not radioactive.───當最普通的鐵（56Fe）的同位素吸收了一個中子，生成物無放射性。

68 、Various indoor or outdoor equipments are available for conducting field studies in the field of hydrogeology/hydrology including environmental isotope analysis.───多種室內(nèi)/室外儀器設(shè)備資源可用于包括同位素分析的多項水文/水文地質(zhì)的野外現(xiàn)場研究。

69 、Dynamic model for Pb isotope evolution in the continental crust of China.───中國大陸地殼鉛同位素演化的動力學模型。

70 、An on-line analysis and measurement system of percentage of water and gas cont ents in petroleum by using radiation isotope is described.───介紹了利用射線輻射衰減方法實現(xiàn)的原油含水率、含氣率在線分析與計量系統(tǒng)。

71 、We know this because the ice in the comets contains twice as many atoms of deuterium (a heavy isotope of hydrogen) to each atom of ordinary hydrogen as we find in seawater.───因為我們知道彗星上冰的氛原子（氫的一種重同位素）與氫原子（現(xiàn)代海水中常見的氫原子）的比值是海水的兩倍。

72 、Any radioactive isotope introduced into the body to study metabolism or other biological processes.───為了研究新陳代謝或其他生物學過程而引入身體的放射性同位素。

73 、Through K-Ar isotope age study in pillow basalt,has gained the isochrone age is 139Ma.The age is the formation age of pillow basalt.───在枕狀玄武巖中獲得K-Ar（全巖）同位素年齡為139Ma（測試單位：宜昌地質(zhì)礦產(chǎn)所同位素室），因此確定其時代為晚侏羅世晚期。

74 、We do this by measuring the distribution of time of decay -- "death" -- of individual atoms in a sample of the isotope.───我們可以辦到這一點，方法是測量該同位素一個樣品的各個原子衰減的時間分布（“死亡”）。

75 、The desorbed methane carbon isotope of coal core samples collected from Jincheng area, South Qinshui basin was measured.───摘要對取自沁水盆地南部晉城地區(qū)的煤芯樣中的解吸氣進行了甲烷碳同位素測定。

76 、The isotope 212Bi decays through both alpha and beta processes that have similar time-scales for this nucleus.───同位素鈾衰變通過阿爾法和貝塔過程中,類似的時間尺度這一核心.

77 、The experiments at CERN use the isotope sodium 22 as their source of positrons.───CERN的實驗以同位素鈉22為正子源。

78 、The composition of oxygen isotope is a good tool to trace the origin and formation environment of sulfate.───摘要氧同位素組成是一個非常有效的示蹤硫酸鹽的起源和形成環(huán)境的工具。

79 、In addition, carbon and nitrogen isotope and its ratio was important indicator in the riverine biogeochemistry study.───另外碳氮同位素及其比值在當前的河流有機質(zhì)生物地球化學研究中仍起著非常重要的示蹤作用。

80 、The application value of traditional method to explore the oil and gas source using carbon isotope was bounded by the type and maturity of source rock.───利用氣體碳同位素探索油氣來源的傳統(tǒng)方法由于受源巖類型、源巖成熟度等因素的影響,其實際應用受到很大的限制。

81 、Breath tests using fatty acids with a stable isotope (13C) were carried out on patients with SSc in order to detect malabsorption and hypoperistalsis.───為檢測腸道吸收異常和蠕動功能降低，我們對硬皮病患者使用穩(wěn)定同位素13C標記的脂肪酸吸收呼吸試驗，前瞻性地觀察到了胃腸道的受累過程。

82 、Isotope ratios of Pb contained in wares were measured using Time-Of-Flight Secondary Ion Mass Spectrometry(TOF-SIMS)without any references.───介紹了用飛行時間二次離子質(zhì)譜法對器物中的鉛同位素比值的測量。

83 、Rates are always higher in evennumbered isotopes.─── 偶數(shù)同位素的裂變速度總要快一些

84 、Oil of Wutonggou and Pingdiquan formation came from Pingdiquan group source rock of Permain by biomarker and carbon isotope correlateion.───原油碳同位素和生物標志化合物對比表明二疊系儲層的稠油來自凹陷二疊系平地泉組源巖。

85 、The isotopes in the sulphur are like a fingerprint.─── 這里面的硫同位素可以作為指紋元素

86 、The isotope fractionation effect is primary factor affecting accuracy of hydrogen isotope analysis.───同位素分餾效應是影響氫同位素準確分析的主要因素。

87 、Only a lighter atomic nuclei fusion can occur, such as the hydrogen isotope deuterium and tritium, and so on.───只有較輕的原子核才能發(fā)生核聚變，比如氫的同位素氘、氚等。

88 、IS ~(40)Ca_(20) A STABLE ISOTOPE?───~(40)Ca_(20)是否穩(wěn)定?

89 、In order to differentiate between isotope, a new system of symbol writing had to be developed.───為了區(qū)分同位素，不得不制定新的符號書寫體系。

90 、They prefer sulfur 32, the element's lightest isotope, to heavier sulfur 34 when given the choice.───如果能選擇的話，這些細菌喜歡攝取硫32（硫最輕的同位素），它們比較不喜歡較重的硫34。

同位素，同素異形體，同分異構(gòu)體，同系物具體有什么區(qū)別

1.同位素：指具有相同質(zhì)子數(shù)不同中子數(shù)的一類原子互稱為同位素。同位素一定指原子，質(zhì)子數(shù)一定相同，指同一類原子。如C-12,C-13,C-14它們互為同位素;還有氕氘氚互為同位素。

2.同素異形體：同一種元素組成的不同種單質(zhì)。如：O2和O3, 金剛石和石墨等。同素異形體一定指的是單質(zhì)。

3.同分異構(gòu)體：分子式相同，結(jié)構(gòu)不同的化合物互稱為同分異構(gòu)體。它們一定是化合物，分子式相同，結(jié)構(gòu)不同。例：C4H10它代表： 正丁烷CH3CH2CH2CH3和異丁烷CH3CH(CH3)CH3, 正丁烷和異丁烷為同分異構(gòu)體。

4.同系物：有機物中，結(jié)構(gòu)相似，分子組成上相差一個或多個CH2的化合物，它們互為同系物。例如：烷烴中的甲烷CH4，乙烷CH3CH3，丙烷CH3CH2CH3，丁烷CH3CH2CH2CH3等等，它們結(jié)構(gòu)相似，分子組成上相差一個或多個CH2,所以它們?yōu)橥滴铩?/p>

同位素，同素異形體，同分異構(gòu)體，同系物具體有什么區(qū)別

舉例子吧

同位素

氫有三種同位素H氕、D氘、T氚

同一元素的不同原子 其原子質(zhì)子數(shù)相同 中子數(shù)不同 質(zhì)量數(shù)不同

同素異形體

氧的同素異形體 氧氣O2 臭氧O3

碳的同素異形體：石墨、金剛石以及C60

其實同樣的單一化學元素組成，但性質(zhì)卻不相同的單質(zhì)

同系物 一般在有機里啦

甲烷(CH4)、乙烷(C2H6)、丙烷(C3H8)、丁烷(C4H10)等是同系物，可用CnH2n+2表示。

結(jié)構(gòu)相似、分子組成相差若干個“CH2”原子團的有機化合物互相稱為同系物。同系物必須是同一類物質(zhì)（含有相同且數(shù)量相等的官能團，羥基例外，酚和醇不能成為同系物，如苯酚和苯甲醇）