?headroom

headroom發(fā)音

英：[?hedru:m]　　美：[?h?d?rum, -?r?m]

英：　　美：

headroom中文意思翻譯

n.頭上空間, 凈空高度

headroom詞形變化

動詞過去分詞: headquartered | 動詞第三人稱單數(shù): headquarters | 動詞過去式: headquartered | 動詞現(xiàn)在分詞: headquartering |

headroom常見例句

1 、Add to that the moving of the peak point of the roof rearward by four inches for an increase in rear seat headroom and the detail changes become more obvious.───加入該運動的高峰點的屋頂后面的4英寸增加后座余量和細節(jié)的變化更加明顯。

2 、There is not enough headroom for buses to go under this bridge.───這座橋梁下面的凈空高度不夠，公共汽車不能通行。

3 、So, headroom plus signal-to-noise ratio equals dynamic range.───凈空間加上信噪比等于動態(tài)范圍。

4 、driving headroom───交通凈空

5 、"Max. Headroom: 3.4 metres"───“高度限制：3.4米”

6 、Star traders do not enjoy the same headroom on salaries (albeit very large salaries) as they did when they were partners in the business.───盡管交易明星們的薪水仍然很高，但薪水的上升空間與他們作為業(yè)務合伙人時相比遜色不少。

7 、That wider stance also allowed designers to give the vehicle a more muscular stance with a lower roofline without compromising headroom.───更寬的車身也使得設計者在增加車身肌肉感的同時而不減小車內(nèi)空間。

8 、the difference between average level and clip points has been call the “headroom”.───后面的超市口要塞也有一個是擁有這樣的力量的男孩！

9 、Gone is the J Mays-influenced Passat-on-’roids cum Ford Five Hundred with enough headroom for a stovepipe hat worn by none other than honest Abe himself.───已經(jīng)是日本J梅斯影響的帕薩特上'roids兼福特FiveHundred有足夠的余量的煙囪帽穿的不是別人，誠實的安倍晉三本人.

10 、There is not enough headroom for buses to lor=# cc0066> go under this bridge.───這座橋梁下面的凈空高度不夠,公共汽車不能通行.

11 、Evaluation of navigation headroom and breadth limit of south sea-routeon of the Hangzhou Bay Major Bridge───杭州灣跨海大橋南航道通航孔通航凈空尺度

12 、astringency of headroom───凈空收斂

13 、headroom [World Bank]: The difference Between the statutory lending limit and the value of loans that are disbursed and outstanding.───凈空: 指貸款的法定限額和支付未償還貸款余額之差。

14 、And at this point, Americans are spending 6% of their disposable income on energy.There is some headroom there given the 8% peak for that statistic in the 1980s.───而基于這一點，當前美國居民的能源消費支出在可支配收入中所占的比重為6%，同1980年代創(chuàng)下的歷史峰值8%尚有一定的距離。

15 、Chinese subcompact cars from manufacturers like Geely and Lifan have surprisingly ample headroom, but fall short of Western tastes in other areas.───中國的制造商如吉利和力帆生產(chǎn)的小汽車有了令人驚異的巨大發(fā)展成就，但還是在其它地方還是達不到西方的品味。

16 、“Our customers expect leading-edge communications services, and Hitachi‘s GPON system gives us the bandwidth headroom we need to to add future advanced services for our subscribers.───我們的客戶希望技術領先的通信服務，日立公司的GPON系統(tǒng)為我們帶來了所需帶寬凈空為未來用戶增加先進的服務。”

17 、low headroom───超低凈空

18 、The high roof contour line provides excellent headroom for the front and rear passengers.───超高車頂輪廓線，為前后座乘客都提供了寬廣的頭頂空間

19 、Accordingly, headroom exercise, driver and accurate worker Ying Shen are used.───因此，高空作業(yè)、駕駛員及精密工作者應慎用。

20 、The impact of the analog tuner section is typically small provided a good AGC concept and sufficient C/N headroom are available.───模擬調(diào)諧電路部分的影響是非常的小，如果一個好的自動增益控制概念和足夠的C/N余量是可利用的。

21 、Standard headroom monorail hoist. it is applicable on single-girder crane which has a monorail, the space between two wheels of the trollwy is adjustable.───標準凈空高度單梁電動葫蘆，用于單軌道系統(tǒng)的單梁起重機，行走機構的走輪寬度可調(diào)節(jié)。

22 、Emissions are one of the main parameters of air compressor, air compressor selection and the capacity to match the requirements of displacement and 10% of headroom left.───排氣量是空壓機的主要參數(shù)之一，選擇空壓機的氣量要和所需的排氣量相匹配，并留有10%的余量。

23 、There be not enough headroom for buses to go under this bridge───這座橋梁下面的凈空高度不夠, 公共汽車不能通行

24 、It provides a theoretical basis for super-low headroom large tonnage overhead traveling crane development.───為柔性化設計理念提供了有力的支持，同時為超低凈空大噸位橋式起重機的成功研制奠定了理論基礎。

25 、There is not enough headroom for buses to go underthis bridge.───這座橋梁下面的凈空高度不夠,公共汽車不能通行。

26 、Headroom in the fund reaches a certain size, the market may see a great deal of space and short of making energy failure has been replaced by the follow-up rebound in the rapid accumulation of energy.───在基金凈空達到一定規(guī)模之時，市場可能因為極度的看空而使得做空的動能有所衰竭，取而代之的是后續(xù)反彈能量的迅速聚集。

27 、It also looks as though the center of the car is raised a bit, giving a rounder roofline, and more headroom for rear passengers.───它還看來，中心的車引起了位，使圓的車頂，更余量為后排乘客.

28 、Overall shape is like the Toyota Wish but the rear section of the roof does not slope down slightly like the Wish to improve headroom for the third row.───整體形狀就像是豐田汽車希望，但后面的一節(jié)屋頂并不邊坡略有下降一樣，希望改善余量為第三排。

29 、Dealer: Well, it also features reclining seats, a tilt steering wheel, and plenty of headroom.───商人:嗯 ,它也以躺椅座,可傾斜的駕駛盤和充裕的頭上空間為特色.

30 、No goods vehicles Restricted headroom───禁止貨車駛入

31 、In view of special headroom requirement and some problems in designing overhead traveling crane with slewing hoisting mechanism, it presents the overall scheme design and the mechanisms' design.───摘要針對有特定凈空要求的、起升機構可回轉橋式起重機設計中的有關問題，介紹了在總體和各機構設計中的相關分析與設計思路。

32 、stair headroom───樓梯凈空

33 、In modern society, it is dangerous that the man is engaged in headroom, high temperature, underground, sea floor waiting occupational is more, cause death easily.───在現(xiàn)代社會里，男人從事高空、高溫、地下、海底等危險職業(yè)的較多，容易造成死亡。

34 、Remove space constraints. Gangways and other work areas where possible should allow adequate room to manoeuvre. Sufficient clear floor space and headroom is important.───消除空間限制。可能時應使搬運通道和其它作業(yè)區(qū)有充分的空間進行處理。重要的是地面和凈空要完全沒有阻礙。

35 、Him openness of many male and female are headroom hands in the joyous person that be fond of.───不少男女坦誠自己是高空交歡的熱衷者。

36 、I'll kill the highest bitrate to give us more headroom.─── 我來中止最高的帶寬 以留出更多動態(tài)余量

37 、The small package outline and low profile make this device ideally suited for use in applications where printed circuit board area and component headroom are at a premium.───小型封裝和纖薄的外形使該器件非常適合于印刷電路板區(qū)域和元件凈空具有非常重要作用的應用。

38 、In the back, a lower hip point leaves headroom for six-footers, and the overall length of the cabin leaves ample legroom in the backseat.───在背后，較低的髖關節(jié)點余量葉片6英尺，總長度留下充足的腿部空間艙的后座。

39 、According to the spatial structure analysis of buildings and OCS,the calculation method and criterion of headroom used for OCS pass of existing railway line are given.───研究目的:對遂渝線無砟軌道綜合試驗段中出現(xiàn)的低凈空隧道的接觸懸掛方式進行介紹和探討。

40 、Although the effect can be resolved by additional terminal circuits, it costs larger power consumption and input headroom.───再內(nèi)**和平均化技術可以有效降低已經(jīng)使用的前置放大器的面積和輸入負載。

41 、As most of you have already known, the Classified is mostly engineered to meet the enthusiast's need for more headroom for subzero extreme overclocking.───由于大部分你已經(jīng)知道，主要是設計的分類，以滿足愛好者的需要更多的余量為零下極端超頻。

42 、Digital recorders and samplers produce audible distortion when they exceed their headroom (i.e.───當數(shù)字記錄和數(shù)字采樣器器超過了它們的空間時會產(chǎn)生可聞失真（）。

43 、Shortened headroom hoist(suitable for such workshop or site have limited headroom) 9,CD───低凈空式電動葫蘆(適用于低矮廠房或場所)

44 、Water Supply and Demand Balances: Converting Uncertainty Into Headroom───水的供需平衡:把不確定因素變換成凈空高度

45 、Breakeven (dollar) depreciation: Depreciation rate of the dollar such that the Bank's headroom is at Breakeven point.───(美元)保本貶值;(美元)凈空臨界貶值:指美元的某一貶值率,在這一貶值率上世界銀行的凈空正好處在臨界點上。

46 、It wasn't so bad, though. I actually had extra headroom.─── 沒那么慘 我其實頭頂上還有空間

47 、Then slim down some of those objects to a size that left headroom for later expansion or higher data volumes.───然后對這些對象減肥,為以后的擴展或者更大的數(shù)據(jù)量留下空間。

48 、This arrangement is used where there is little headroom, as in trucks, buses, and rail cars.───這種氣缸排列通常用在頭部空間很小的機動車上，如貨車、公共汽車以及有軌電車上。

49 、If headroom is a big thing for you, be sure to opt out of a sunroof-equipped model: You'll gain more than an inch of extra clearance between the top of your keppy and the headliner.───如果是一個大的事情你，一定要退出一個天窗裝備型號：您將獲得超過1英寸的額外間隙頂部的keppy和頭條新聞。

50 、Significant performance headroom, especially for multi-threaded applications, helps boost system utilization through virtualization and application responsiveness.───巨大的性能擴展空間(尤其是針對多線程應用),可通過虛擬化和應用響應能力幫助提高系統(tǒng)利用率。

51 、The dimension of the window should compare size of window inside headroom small 6 - 8 millimeter.───窗的尺寸應比窗口內(nèi)側凈空尺寸小6-8毫米。

52 、The headroom that does not visit office of the corner side below inclined housetop is not very tall, but for the height to dot, may enough still, the height that wants a bed only is not very tall.───由于所有的房間都有斜斜的屋頂，因此如何充分利用角落、變廢為寶，是重中之重。

53 、Dealer: Well, it also features recling seats, a tilt steering wheel, and plenty of headroom.───商人：嗯，它也以躺椅座，可傾斜的駕駛盤和充裕的頭上空間為特色。

54 、The Cube's front seat features 42.6 inches of headroom in front and 40.2 in the rear.───立方體的前排座椅功能四十二點六英寸余量前面和40.2后方。

55 、Michael Gough comes out of this smelling like roses, since he's been the only consistently good thing in all four films, despite being turned into Alfred Headroom at one point.───我只希望課本某天使用shite這個片斷作為filmmaking的一個好的消極例子。

56 、dynamic headroom───動態(tài)凈空

57 、It drives the HD800 better than any other amp I've tried it with, and I have a feeling much of that has to do with the massive amount of headroom this amp has.───它驅動HD800比任何我聽過的耳放要更好，具有非常廣大的頭頂空間。

58 、The minimum height under boom equals the height of the load, plus the maximum distance the load is to be lifted, plus the headroom required for the hoist, trolley, and attachments.───推力指施加在支撐結構上推向（或壓向）的力，而拉力是拉伸的力。推力和拉力是相等的（但方向相反）。當起重機處于滿負荷狀態(tài)時，推力和拉力出現(xiàn)最大值。

59 、There is not enough headroom for buses to go under this bridge───這座橋梁下面的凈空高度不夠,公共汽車不能通行

60 、Otherwise, your loud cry that underground's excited MM can stay ceaselessly to the middle of headroom only: "I am willing!───不然，地下激動的MM只能向高空中不斷盤桓的你吶喊：“我愿意！

61 、Come from height say, the family decorates inside headroom height do not answer little at 2. 6 meters.───從高度上來說，家庭裝修的內(nèi)凈空高度不應少于2．6米。

62 、low headroom tunnel───低凈空隧道

63 、Performance. This boat has deep propeller pockets to achieve a level and more forward engine installation, plus more headroom.───表現(xiàn)。船民，這有著深刻的螺旋槳的口袋，以達致的水平和更有遠見的引擎，安裝，再加上更多的余量。

64 、headroom of flight───梯段凈高

65 、Founded in 1993, officially shipping in 1996, the airport environment, with "garden-like air," as the goal, headroom environment.───始建于1993年，1996年正式通航，機場環(huán)境優(yōu)美，以“花園式空港”為目標，凈空環(huán)境好。

66 、Navigation headroom limit and technology requirement proof of Fujiang Footbridge, Tongnan County───潼南涪江人行橋通航凈空尺度及技術要求論證

67 、Headroom says it's a great alternative to the HD600, and I think they're right.───耳機雜志說它是可替代600的選擇。我也這樣認為。

68 、Note that there is sufficient headroom to allow at least a 10% overrange (to +4.4 V).───值得一提的是，本電路的輸出范圍至少還有+10%的調(diào)整空間（達+4.4V）。

69 、But the Jetta's shoulder room improves from 52.5 inches to 53.1 inches, which is better than the 52 inches in a Civic, and headroom grows 0.3 inch to tie the Civic sedan's 37.2 inches.───但是，捷達的肩部空間從52.5英寸增加到53.1英寸，好與思域的52英寸，同時，頭部空間也比思域轎車的37.2英寸多0.3英寸。

70 、Headroom and legroom upfront is ample, however in the rear due to the sunroof, which comes standard on the premium grade, headroom space is at a premium.───頭部和腿部空間前期充分的，但是在后方由于天窗，這是標準的優(yōu)質等級，余量空間變得異常珍貴。

71 、Shape with an asymmetric structure could (forge) out, spare parts the outer surface of unilateralism can leave a little headroom.───外形含非對稱結構可以鍛出，零件外表面單邊留少許余量即可。

72 、Well, it also features recling seats, a tilt steering wheel, and plenty of headroom.───嗯 ,它也以躺椅座,可傾斜的駕駛盤和充裕的頭上空間為特色.

73 、ATI's cards, which rely on their CAL driver, still seem to have a lot of headroom.───基于CAL驅動的ATI顯卡看起來則是還有不小的提升空間。

74 、Increased memory: 8 MB SDRAM provide not only enough space for the most complex configurations of large multi-node installations, it includes even plenty of headroom for future developments.───內(nèi)存增加:8MB SDRAM不僅提供了足夠的空間用于最復雜的大型多節(jié)點配置,還為將來的功能升級提供了足夠的儲備空間。

75 、In my mind there are three characteristics that qualify a sub as “high performance”: Excellent tightness (often labeled speed) and detail, dynamics (i.e. headroom), and extension.───我認為有三個特征項可以將一只低音炮認定為“高性能”：極好的緊密度（經(jīng)常被說成為速度）和細節(jié)，動態(tài)（即空間裕度）和延伸（下潛）。

76 、Dealer: Well, it also features recling seats, a tilt steering wheel, and plenty of headroom .───商人:嗯,它也以躺椅座,可傾斜的駕駛盤和充裕的頭上空間為特色。

77 、Advanced warning of restricted headroom may be given by a Restricted headroom ahead warning sign with a supplementary plate showing the distance to the restriction.───前面有通行高度限制的警告標志,用以預先警告駕駛人,并有輔助標志牌,說明限制生效的地點距離有多遠。

78 、Intel also provides its chipset customers with the Intel Application Accelerator software package, designed to deliver additional Integrated Drive Electronics (IDE) performance and provide headroom for future hard disk drives.───英特爾還向芯片組用戶提供了英特爾應用程序加速器軟件包，該軟件包可以提升ide設備的性能并為將來的硬盤驅動器預留空間而設計。

79 、A warning sign will indicate the maximum headroom and that part of the road where the indicated headroom is available.───警告標志會說明最大的通行高度,以及在道路哪一處,會有通行高度限制。

80 、There's a lot of headroom for such a small car.───這么小的一輛汽車的頭上空間蠻大的。

81 、We were making headroom, using the machine to build and rebuild our dream.─── 我們?nèi)〉昧艘恍┻M展 利用國家機器來建造并重建我們的夢想

82 、This will leave you with more “headroom” to emphasize critical elements. (Think about it this way: If every word on a page is red and bold, do any of them stand out?───這樣就會給我們留下繼續(xù)調(diào)整的空間，可以強調(diào)更為關鍵的元素（你想想看，如果整頁文字都是紅色粗體，肯定哪個元素都沒有被突出出來）。

83 、Wary of economic constraints, yet unsure of their future emissions levels and the costs of stanching the flow, these states would demand generous headroom to grow.───這些國家已經(jīng)厭倦經(jīng)濟制約，又不確定未來的排放程度及降低排放量的成本，因此需要寬廣的成長空間。

如何用stata做自相關存在性檢驗？

1、使用系統(tǒng)自帶的數(shù)據(jù)做RESET檢驗，sysuse auto，解釋：導入系統(tǒng)中自帶數(shù)據(jù)，autodescirbe解釋：看看數(shù)據(jù)的構成。

2、reg price rep78 headroom trunk weight length，解釋：對數(shù)據(jù)進行回歸。

3、使用y的擬合值進行RESET檢驗，estat ovtest，發(fā)現(xiàn)p的擬合值為0.051這個數(shù)比較接近拒絕域，我們認為我們可能遺漏了高次項。

4、直接使用解釋變量的高次項進行RESET檢驗，estat ovtest，rhs。解釋：添加了選項rhs，發(fā)現(xiàn)在5%的水平上拒絕原假設，認為遺漏了高階非線性項。

5、經(jīng)過數(shù)次嘗試之后，發(fā)現(xiàn)gen wight2=weight^2，reg price rep78 weight2 headroom trunk weight length，效果顯著。

Stata 主成分分析

Stata 命令

1主成分估計

Stata可以通過變量進行主成分分析，也可以直接通過相關系數(shù)矩陣或協(xié)方差矩陣進行。

（1）sysuse auto,clear

pca trunk weight length headroom

pca trunk weight length headroom, comp(2) covariance

（2）webuse bg2,clear

pca bg2cost , vce(normal)

2 Estat

estat給出了幾個非常有用的工具，包括KMO、SMC等指標。

Kaiser-Meyer-Olkin（KMO），是用于測量變量之間相關關系的強弱的重要指標，是通過比較兩個變量的相關系數(shù)與偏相關系數(shù)得到的。KMO介于0于1之間。KMO越高，表明變量的共性越強。如果偏相關系數(shù)相對于相關系數(shù)比較高，則KMO比較低，主成分分析不能起到很好的數(shù)據(jù)約化效果。根據(jù)Kaiser（1974），一般的判斷標準如下：0.00-0.49,不能接受（unacceptable）;0.50-0.59,非常差（miserable）；0.60-0.69，勉強接受（mediocre）；0.70-0.79,可以接受

（middling）；0.80-0.89，比較好（meritorious）；0.90-1.00,非常好（marvelous）。

SMC即一個變量與其他所有變量的復相關系數(shù)的平方，也就是復回歸方程的可決系數(shù)。SMC比較高表明變量的線性關系越強，共性越強，主成分分析就越合適。

根據(jù)KMO越高，表明變量的共性越強和SMC比較高表明變量的線性關系越強，共性越強，主成分分析就越合適。

webuse bg2,clear

pca bg2cost , vce(normal)

estat anti

estat kmo

estat loadings

estat residuals

estat smc

estat summarize

3 預測

Stata可以通過predict預測變量得分、擬合值和殘差等。

webuse bg2,clear

pca bg2cost , vce(normal)

predict score fit residual q （備注：q代表殘差的平方和）

4 碎石圖

碎石圖是判斷保留多少個主成分的重要方法。命令為screeplot。

webuse bg2,clear

pca bg2cost , vce(normal)

screeplot

5 得分圖、載荷圖

得分圖即不同主成分得分的散點圖。命令為scoreplot。 webuse bg2,clear

pca bg2cost*, vce(normal)

scoreplot

Scores for component 2

載荷圖即不同主成分載荷的散點圖。命令為loadingplot。

webuse bg2,clear

pca bg2cost*, vce(normal) loadingplot

Component 2