質點大小影響 的英文怎麼說

中文拼音 [zhídiǎnxiǎoyǐngxiǎng]
質點大小影響 英文
particle-size effect
  • : Ⅰ名詞1 (性質; 本質) nature; character; essence 2 (質量) quality 3 (物質) matter; substance;...
  • : Ⅰ名詞1 (液體的小滴) drop (of liquid) 2 (細小的痕跡) spot; dot; speck 3 (漢字的筆畫「、」)...
  • : Ⅰ形容詞1 (體積、面積、數量、強度等不大) small; little; petty; minor 2 (年紀小的; 年幼的) youn...
  • : Ⅰ名詞1 (物體擋住光線后映出的形象) shadow 2 (鏡中、水面等反映出來的物體形象) reflection; image...
  1. Abstract : the early embryo developmental block is a common phenomenon in mammal when embryos are cultured in vitro. many studies of phosphorus, glucose, hypoxanthine and cytoplasmic factors on early embryo developmental block carried out by different methods such as morphology, biochemistry, molecular biology and micromanipulation have been reviewed. the merit and shortcoming were analyzed and the necessity of using simple or components limited media overcoming early embryo developmental block were also reviewed. media that have been shown effective in overcoming early embryo developmental block in mouse, rat, hamster, rabbit, pig, sheep, cattle and monkey were listed

    摘要哺乳動物胚胎在體外培養中普遍存在早期發育阻滯的現象.對此,人們用形態學、生物化學、分子生物學、顯微操作等手段開展了磷酸、葡萄糖、次黃嘌呤和細胞因素對早期胚胎發育阻滯的的研究.本文綜合分析了共培養系統的優缺.說明了採用完全成分已知的培養液對進行有關研究的必要性.列出了有效運用於克服鼠、鼠、倉鼠、兔、豬、羊、牛、猴等動物早期胚胎阻滯的成分已知的培養液的名稱。
  2. 4 ) in a pre - swirl rotator - stator cavities with discrete pre - swirl nozzles and blade - cooling entry holes, the influences of pre - swirl angle and flow parameter on the flow and heat transfer characteristics were numerically investigated. the correlation for average nusselt number vs rotating reynold number or non - dimensional mass flowrate were established. the results show that : advantage of per - swirl inflow is the effect of cooling the blade - cooling entry holes ; pre - swirl inflow increases heat transfer in rotating disk of pre - swirl chamber ; as pre - swirl angle increases, local nusselt number decreases in pre - swirl chamber ; the temperature of stator of inner rotator - stator chamber and per - swirl chamber decreases as rotating reynold number increases ; when the axial mass flowrate maintains constant, heat transfer in the rotating disk of inner rotator - stator cavities does n ' t change as per - swirl mass flowrate increases, while heat transfer in the rotating disk of per - swirl chamber increases ; when the pre - swirl mass flowrate maintains constant, change of the axial mass flowrate has effect on the whole cavity

    結果表明,預旋進氣的優在於增強了葉片冷卻孔附近的對流換熱效果,局部努謝爾數隨預旋角的增而有所減;隨旋轉雷諾數的增加,不論是內轉靜腔室還是預旋腔室的靜盤上的溫度都不同程度的降低:當軸向中心進氣量流量不變時,隨預旋進氣的量流量增加,內轉靜腔室的轉盤盤面上的換熱基本沒有變化,而預旋腔室的轉盤盤面上的換熱效果增強;當預旋進氣量流量不變時,軸向中心進氣的量流量的改變對整個盤腔都有
  3. The auto - body assembly requires hundreds of sheet metals. for accounting the effect of low stiffness of sheet metals, their tolerances based on analysis and synthesis have an influence on the quality of the assembly

    轎車車身主要由沖壓金屬薄壁件組成,具有柔性、剛度等特,其裝配偏差的分析與綜合對裝配量有很
  4. It has large signification for people to improve residence environment, live in satisfactory rooms and lead a high quality life. main contents of the thesis : crack and its control of buildings made of concrete small air blocks. 1 introduced development and application of building blocks in china and foreign countries ; made a research on the mechanism, configuration and reason of crack ; analysized the influencing factors of blockwork crack and put forwards the anti - measures on design, production and construction, etc

    通過分析、研究,認清了裂縫產生的機理、成因,找出裂縫的相關因素,針對產生裂縫的原因,在理論上提出了治理裂縫發生的相關措施,這些措施會對青島地區混凝土型砌塊建築的推廣起到積極作用,使墻體裂縫這個熱問題將得到有效的治理,為使老百姓能夠住上放心房,滿意房,為改善居住環境,提高生活量將起到重的意義。
  5. Those sensitive parameters making system have negative damping and occur self - excited shimmy are horizontal pulling lever rigidity, tire sideslip rigidity, steering gear rigidity and damping, kingpin equivalent damping, kingpin caster angle, tire drag. and wheel center distance, tire side rigidity, vehicle wheel unbalanced mass, tire vertical rigidity, and distance from kingpin center to the vertical central line plane of tire have great influence on shimmy, but they do n ' t make the system have negative damping. and horizontal pulling lever damping, suspension damping and rigidity have very small influence on shimmy

    橫拉桿剛度、輪胎的側偏剛度、轉向機剛度、轉向機阻尼、繞主銷當量阻尼、主銷后傾角、輪胎拖距是擺振的敏感性參數,適當調節某一參數可引起系統的負阻尼,使系統產生自激擺振;輪距、輪胎側向剛度、車輪上的不平衡量、輪胎垂向剛度及主銷延長線與地面交至車輪平面的距離對擺振的也較,但不會使系統出現負阻尼;而橫拉桿阻尼、懸架阻尼與懸架剛度對擺振的
  6. Through analyzing on the different phenomena of gas pouring amount at different coal seam, different area at the same seam, different position at the same area, the coal thicknss, inclined angle, structure, roof and floor rock character and water content in coal est. geology factor are regarded as the main reason of effecting the gas pouring amount

    通過對不同煤層,同一煤層不同區域,同一區域不同地瓦斯湧出量有很差異現象的分析,認為煤層厚度、傾角、構造、頂底板巖性、煤中水分等地因素是瓦斯湧出的主要原因。
  7. The main issues of the research are put as following : firstly, with the international comparing of market sharing rate and trading competitive index, it was revealed that wheat in china has inferior international competitiveness with a bit rising during current years, however, which is still behind that of the main wheat export countries. secondly, after the international comparing of the main factors that affect the international competitiveness of wheat, it was discovered that chinese wheat has the obvious cost advantage on unit product, while because of the high circulation fee, it results in inferior advantage on the price ; low and unstable quality is another factor which leads to inferior wheat competitiveness ; the input of fertilizer and labor makes little impact on the productivity of chinese wheat, while the input of seeds, irrigation and machine makes a strong impact, so it should be more invested in seeds, irrigation and machine to reduce wheat ' s unit cost. the assistant industries of the wheat, such as breed, production materials and processing industries, have inferior international competitiveness and lagged development

    其次,通過對麥國際競爭力的主要因素的國際比較發現:中國麥單位產品生產成本具有明顯優勢,但由於較高的流通費用,導致在價格上不具有優勢;量較差、品不穩定是導致中國麥國際競爭力較低的主要因素;生產要素中化肥和勞動力投入對中國麥生產力水平的程度較,而種子、灌溉和機械投入對麥生產力水平的的程度較,因此麥生產投入要以增加種子、灌溉和機械的投入為主,代替量的化肥和勞動力投入,進一步降低麥單位產品成本,增強中國麥國際競爭力;中國麥的上下游輔助產業(包括品種資源、生產資料和加工業)的國際競爭力較弱,發展較為滯后;中國麥生產者的組織化程度較低嚴重製約了中國量的提高、流通費用的降低和加工業的發展;麥生產經營活動本身的特決定了在充分發揮市場機製作用的基礎上,必須通過政府的宏觀調控來克服其市場機制的失靈,保障市場機制有效運行,但通過國際比較研究發現:中國政府在生產者支持、市場體系建設和國際貿易政策上對麥的支持水平較低,與提高中國麥國際競爭力的要求有較差距,尤其是較低的生產者支持水平和市場體系建設程度制約了中國麥國際競爭力的提高。
  8. In this paper, a new control strategy based on the adaptive deadbeat voltage space vector is presented. this control scheme has a lower sample frequency and a smaller difference between switch frequency and sample frequency. it has many advantages, such as producing zero vectors organically, tracing exactly, non - shaking, etc. and its dynamic response is better

    對于電能量調節器來講, pwm跟隨指令參考信號的控制性能在很程度上著裝置的補償效果,本文選擇無差拍電壓空間矢量控制為系統控制策略,這種控制方法具有采樣頻率低,開關頻率與采樣頻率的差距,能有機地產主零矢量、跟蹤精確以及無抖振等優,動態應快。
  9. The research results show that aggregate gradation and the nominal maximum aggregate size evidently influence the shear resistance of asphalt mixture ; aggregate flakiness content influences the shear resistance of asphalt mixture, and with the increase of aggregate flakiness content the shear resistance of asphalt mixture decreases ; asphalt binder properties, especially penetration, softening point and viscosity influence the shear resistance of asphalt mixture, and the latter increases with the decrease of penetration and the increase of softening point and viscosity ; asphalt content influences shear resistance of asphalt mixture, and with the increase of binder / aggregate ratio the shear resistance of asphalt mixture decreases ; air void influences shear resistance of asphalt mixture, and usually with the increase of air void the shear resistance of asphalt mixture decreases ; homogeneity does not have a direct and obvious relationship with absolute value of shear resistance of asphalt mixture, but does with variation of shear resistance of asphalt mixture

    研究結果表明:集料級配和公稱最集料粒徑對瀝青混合料抗剪強度有顯著的;瀝青混合料抗剪強度受其集料中針片狀含量的,集料中針片狀含量增,瀝青混合料抗剪強度減;結合料的性,特別是針入度、軟化和粘度對瀝青混合料抗剪強度有較,隨著針入度減,軟化和粘度增,瀝青混合料抗剪強度增;含油量對瀝青混合料抗剪強度有較,隨著油石比的增,瀝青混合料抗剪強度減;瀝青混合料抗剪強度受其空隙率的,一般隨著空隙率的增,其抗剪強度減;瀝青混合料均勻性與瀝青混合料抗剪強度絕對數值間沒有明顯的關聯,而與數值間的變異性有著很好的相關性。
  10. However, because the meshless methods are relatively new, there exist the following technical problems : 1. complexity in algorithms for computing the interpolation functions ; 2. difficulties in the implementation of essential boundary conditions ; 3

    本學位論文針對目前無單元發展中存在的主要技術問題:形函數計算;本邊界條件實現;(包含其中的數)的確定;輔助積分網格等問題進行了研究。
  11. The results show that the solar mass - loss extends the semi - major axis, the distance at perihelion and orbital periods of the meteor streams, especially, the extensive influence on the semi - major axis is not overlooked, but this influence on other orbital elements may be neglected

    其計算結果表明,太陽量損失使流星群軌道半長軸每世紀的改變效應較明顯,它們同太陽距離的擴值得關注,但對軌道周期的拉長每世紀的,對近日經度只有量級變化到可以略而不計。
  12. After analysising the five factors ( schedule, quality, investment, claim, risk ) which influence the limit point, this paper presents that the clients should decide the time for the construction in accordance with their own characterististics and utilizing benefits, and decide the project quality according to the sum of purchasing costs ( the price of contracts ) and the utilizing costs ( the costs to run and maintain ), and make it most possible to use supervisim optimal design and construction and to reduce claim and risk, which gives the clients a satisfying project with minimal investmentat the same time, this article tells the contractors how to optimize and make decision to minimize the costs in practice on the basis of meeting the requirment of the clients

    在分析了極值的進度、量、投資、索賠和風險五因素之後,提出了業主應結合自身的特,根據工程使用效益來決定工期,根據購置成本(即合同價格)和使用成本(即運行費和維護費)之和來決定工程量水平,並盡可能通過監理來優化設計、優化施工,減少索賠和風險,使業主最終既能得到滿意的工程,又能使總資金投入最。同時,也指出承包商應如何在滿足業主要求的前提下,進行優化和決策,使實際發生的成本最
  13. In the fourth chapter, by using the theory of regional potential energy, aiming at the regional layout of international direct investment in china, the author made an analysis on the cause resulting in the nonequilibrium layout of foreign investment and the effects on the changes of regional economic structure caused by the regional layout of foreign investment and forecasted the tendency for importing foreign investment of the provinces, municipalities directly under the central government and autonomous regions. in the conclusion, according to the theory of regional potential energy, the author set forth the law of motion of international direct investment. regional potential energy is determined by the nature, combined mode and development of the elements in the region

    結論部分在總結正文的基礎上,根據區域勢能理論,歸納出國際直接投資的運動規律:區域內備項要素的性、組合與發展變化決定了區域勢能的;而各區域的勢能差異,必然對資本的區域間流動產生強烈的,並決定其定向運動的規律;作為經濟發展的關鍵性要素,外資進入后,又將通過區域勢能的激活效應重塑區域社會經濟現實,從總量與結構等各個方面改變區域的發展水平和發展方向,並最終決定新一輪區域勢能的形成及其性和特
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