直徑比 的英文怎麼說
中文拼音 [zhíjìngbǐ]
直徑比
英文
diameter ratio-
The structure of air - blast pipe was improved on. an orienting object was installed based on theoretical analysis, that increase the spraying span. it has been found that both spraying span and droplets uniformity improved, by installing the orienting object. according to the results of a great number of experiments, orderliness of droplets diameter along the spraying span was researched, and rational spraying span of air - assisted sprayer was suggested
通過試驗檢驗噴霧機樣機的噴霧性能，並提出對各項參數的優化設計方案。通過正交試驗和對比試驗對霧滴取樣，證明導流器的安裝不僅增加了噴幅，而且還提高了霧滴均勻性系數。根據大量試驗的結果分析，找出了霧滴直徑在噴幅方向上所呈現的變化規律，並提出了合理的噴幅范圍。In continental clouds, most droplets are smaller than one of seven hundredth of an inch chay to s. i. unit 0. 04 millimetre in diameter
在內陸上的雲層，大部分的小水點的直徑要比千分之四毫米還要少One of the stars shall be bigger than the others, with its circumcircle s diameter being 310ths of the height of the flag, and shall be placed in the left ; the four other stars shall be smaller, with their circumcircle s diameter being 110th of the height of the flag, encircling the big star on its right in the shape of an arc
旗面為紅色，長方形，其長與高為三與二之比，旗面左上方綴黃色五角星五顆。一星較大，其外接圓直徑為旗高十分之三，居左；四星較小，其外接圓直徑為旗高十分之一，環拱于大星之右。The diameter of mars is slightly over half that of the earth.
火星的直徑比地球的半徑稍大些。Evaluating value of the ratio of the width of pars compacta of substantia nigra to midbrain diameter in parkinson ' s disease
黑質緻密帶寬度和中腦直徑比值對帕金森病的評估價值( 3 ) firstly detectes the waviness of the anticlinal walls ( sfc ) and the ratio of the feret ' s diameter ( slc ) of the epidermal cells in the leaves of 11 species, and studies the methodology, then give out two conclusion : a. epidermal cells in the place between middle and first side vein of the lamina on the third kont starting from ground have the most stable microscopic characters
（ 3 ）首次採用計算機圖像分析「 hpias ? 1000高清晰度彩色病理圖文分析系統」測定了獐牙菜屬11種藥用植物葉上表皮細胞垂周壁彎曲程度（ sfc ）和細胞縱橫直徑比（ slf ） ，並進行了方法學研究，得到以下結論：莖上第3節葉片中段主脈與第一側脈之間上表皮細胞形態最穩定。The thermal visualizations of jet impingement cooling with single or double row holes inside semi - enclosed channel are measured by using infrared camera and then the impingement cooling heat transfer coefficients are deduced. the effects of flow and geometry parameters on convective heat coefficients are obtained. the results show that : for a single row normal impingement, the impingement cooling effectiveness is enhanced with the increase of impinging reynolds number or the decrease of hole space to diameter ratio, and the best effectiveness is achieved under the jet - to - surface spacing equals to 2 ; when the jet is oblique to the confined wall, the cooling effectiveness is weaken especially under the jet - to - surface spacing ratio is greater than 2 ; for double rows normal impingement cooling, the cooling effectiveness of rear row jet is weaker than the front row under lower impinging reynolds number or bigger jet - to - surface spacing
對于單排垂直射流，沖擊冷卻效果隨射流雷諾數的增加、孔間距與直徑比的減小而得到提高，沖擊間距比為2時換熱效果最好;沖擊孔中心線向通道封閉一側傾斜后，射流沖擊冷卻的范圍變窄，當沖擊間距比大於2時駐點區的對流換熱能力明顯降低;對于雙排沖擊射流，孔排間距與直徑比的增加使沖擊冷卻范圍變大，但在兩排孔之間區域的對流換熱系數有所下降;在較小的沖擊射流雷諾數和較大的沖擊間距比下，後排射流的沖擊換熱效果要遜於前排射流。Furthermore, the growth and the study of self - organized quantum dots structures become more and more important recently, and the application of self - organization technique become wider and wider in this thesis, we address the theory of film growth and the growth technique firstly more, the ways and characteristics of surface detection are prescribed we mainly report the growth process, results and discuss of self - organized quantum dots structures in the a12o3 substrates by s - k mode using ecr - mocvd, in the espd - u device the growth art of ain epilayer which is the preliminary foundation of self - organized gan / ain quantum dots structures, including the substrate cleaning, nitridation, the growth of buffer and the growth of gan and ain epilayer, is discussed we deliberately compare the test result of rheed xrd and afm and achieved the optimalized condition of ain at last we have successfully realized the growth of ain which is much smooth and better crystal quality moreover, we grow the self - organized gan / ain quantum dots structure in s - k mode because the limits of the heater temperature, we can not grow the atom - smooth epilayer of ain until now so we could not grow better quantum dots which have small diameter and big density but the self - organized quantum dots structures with better quality will be realized successfully if the substrate temperature is increased the thesis study belong to my tutor subject of national nature science foundation ( 69976008 )
本論文主要論述了在espd - u裝置上，採用電子迴旋共振等離子體增強mocvd （ ecr - pamocvd ）方法，在藍寶石襯底上通過s - k模式自組裝生長gan aln量子點結構的生長工藝、結果及討論。而重點分析了自組裝生長量子點之前的aln外延層生長工藝，包括襯底清洗、氮化、緩沖層的生長和gan 、 aln外延層的生長；通過高能電子衍射、 x射線衍射和原子力顯微鏡測試，並且對這些測試結果進行了詳細的比較研究，得出了較優化的工藝條件，生長出了晶質較好、表面較平整的aln外延層；進而採用s - k模式自組裝生長了gan aln量子點結構。由於實驗裝置加熱爐溫度的限制，我們沒有能夠生長出原子級平滑的aln外延層表面，因而沒能夠生長出密度比較大和直徑比較小的量子點。Standard ( conventional ) port balls are up to one pipe size smaller than nominal pipe size, but still have significantly better flow than globe valves
標準（常規）流道球閥用於管道直徑比管道公稱通徑小的管道，但是其流通能力仍然比截止閥好得多。Method : in this study the author established a three - dimensional computerized model of hip joint and tested the range of motion of three different head - neck ratio after total hip arthroplasty
方法：應用計算機模擬技術建立人工全髖關節三維計算機模型，模擬測試三種不同頭頸直徑比全髖假體在體外不同安置方位的活動范圍。Based on ansys, this paper studies stress concentration on single notch of eight kinds of high strength bolts used in grid structure, obtaining their stress concentration coefficients, discussing the effect of ascending angle, bottom radius of screw thread and bolt - ball on stress concentration, introducing their effect coefficients of a1, a2, a3, putting forward the formulae of stress concentration coefficient
本文以ansys有限元軟體為研究手段，針對網架螺栓球節點的8種螺栓規格進行單缺口應力集中分析，定量求得相應的應力集中系數k _ t ；論述了螺紋升角、螺紋牙根圓角半徑r及球栓直徑比d / d對k _ t的影響，並引入相應的影響系數_ 1 、 _ 2及_ 3 ，最終提出了應力集中系數k的計算公式。By doing single fracture drainage experiments, this paper has successfully presented the logarithm function relationship between ratio of drainage discharge through upward and plumb drainage hole and the ratio of their equivalent diameters. the drainage effect will be the best when the included angle between drainage hole and fracture surface is 21 ~ 36
4 、通過單裂隙排水試驗，建立了傾斜孔和垂直孔的排水量之比與其交界線的等效直徑比之間的自然對數關系式，排水孔排水量基本隨其與裂隙面的交角減小而增大；對單組裂隙排水的初步分析表明，排水孔與裂隙面的夾角在21 ~ 36范圍內排水效果最佳。Abstract : it has been discovered that the coke formed in ch4 coupling under plasma can be eliminated via pure h2 discharge in the system. eliminating coke under plasma with positive or negative high voltage in dc electric field has been compared with that in ac field. the elimination of coke takes place only on the negative of the two electrodes in dc field, while on both electrodes in ac field. the coke on the reactor walls can be eliminated with either positive or negative high voltage and in either dc or ac field. based on the experimental facts, hypotheses of the reaction mechanism are suggested. quantity of eliminating coke depends on diametrical ratio between reactor and the electrode, input power and electrode materials
文摘:發現了等離子條件下甲烷偶聯反應中形成的積炭可以通過該體系中純氫氣放電而消除.將消除積炭使用直流電場的正高壓和負高壓與使用交流電場作了比較，發現直流電場中無論使用正高壓還是負高壓，只有陰極上的積炭可以被消除，而交流電場中兩極積炭均可被消除，反應器壁上的積炭在以上任何情況下均可被消除.基於實驗事實提出了機理假設.消除積炭的量與輸入功率、反應器對電極的直徑比以及電極材料有關They are hoop - shaped drums with a diameter that is much greater than the depth of their shell
簡單來說只要鼓面的直徑比鼓框的深度大或兩者相等，均可稱為框架鼓。Standard test method for determining the l d ratio of neutron radiography beams
中子射線照相束長度直徑比測定的標準試驗方法The diameter of the star betelgeuse is more than a quarter the size of our entire solar system
獵戶座中的一等星的直徑比我們整個太陽系直徑的四分之一還要大。By such means as changing the diameter ratio of the box and pipe and the volume of the stable pressure box, the effect of the box in different situations is contrasted
通過改變穩壓箱阻尼管的直徑比、穩壓箱的容積等方法，比較了穩壓箱在幾種不同情況下的穩壓效果。[ 4 ] the trim exponents vary with the fluid viscosity and impeller diameter ratio at same time
（ 4 ）切割指數同時隨著切割后的直徑比和液體粘度變化而變化。Objective : to study the influence of head - neck ratio and implant position on the range of motion ( rom ) after total hip arthroplasty ( tha )
摘要目的：探討不同股骨頭頸直徑比和髖臼安置方位對人工全髖關節活動范圍的影響。Result : range of motion after total hip arthroplasty depended on design parameters such as head - neck ratio, but also on the implantation parameters such as the cup ' s inclination and antevertion, the stem ' s antevertion and their combination of each other
結果：全髖關節置換術后的活動范圍不僅取決于假體設計的某些參數，如頭頸直徑比，還取決于假體安置的某些參數，如臼杯的外展角和前傾角，假體柄的前傾角，以及臼杯和柄的相互方向等等。分享友人