正中孔 的英文怎麼說

中文拼音 [zhēngzhōngkǒng]
正中孔 英文
median aperture
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 正中 : middle; centre
  1. In this paper the floral ontogeny and the ovary development of rivina humilis l. were observed. the results showed that ( 1 ) the tepal primordia initiated in 2 / 5 spirals. the abaxial one initiated first, then the adaxial one, finally the lateral two initiated nearly simultaneously. the third one initiated on the position near the first tepal, and there is a gap between itself and the second tepal. ( 2 ) the 4 stamineal primordia initiated in one whorl at the same time. ( 3 ) the carpellary primordium initiated from the abaxial side of flower primordium ; the carpellary primordium grew upwards and towards axis after it was formed, therefore an elliptic orifice was formed at the adaxial position of ovary, which was the remainder of the mouth of ovary before the ovary was fused completely. with the ovary maturing, the orifice was narrowed because of the ovary growth, at last fused completely. the gynoecium is composed of a single carpel. ( 4 ) in the series developmental sections of ovary, the ovular primordium was initiated on the adaxial meristem when the mouth of ovary was formed

    對數珠珊瑚的花器官發生和子房的發育過程進行了觀察.結果表明: （ 1 ）數珠珊瑚花被呈2 / 5螺旋狀發生，遠軸側的1枚先發生，其次為近軸側的1枚發生，最後側方的2枚花被幾乎同時發生，第3枚花被在靠近第1枚的位置發生，第2枚和第3枚之間有1個空隙; （ 2 ） 4枚雄蕊是同時發生的; （ 3 ）心皮發生於分生組織的遠軸側，心皮原基形成后，向上向軸生長，在子房成熟前在近軸側非正中位形成1個孔，該孔為心皮最終愈合前的殘跡，到子房成熟時，因子房的生長孔被擠壓縮小，在進一步的生長過程中愈合.子房由1枚心皮構成; （ 4 ）從子房發育過程的切片看，該植物的胚珠是在子房發生后不久發生的，子房上的圓孔形成時，從近軸側的分生組織發生胚珠原基，由胚珠原基分化出珠被與珠心
  2. Chlamys farreri, which belongs to mollusca, bivalvia, pterioidae pectinidae, are widely distributed on the china from donghai sea to bohai sea, korea and japan. this species has been the main aquacultrue shellfish for many years in northchina

    利用同工酶技術，對中國櫛孔扇貝和日本櫛孔扇貝的遺傳差異進行了比較分析，並對它們的正反交後代的酶表型及遺傳型進行了分析，探討了亞種間雜交的機制。
  3. That is the premise of the bg / ha electrophoresis codeposition. the laws of the electrophoresis deposition of the bg and ha partic les were found by the study on each of their deposition under the different conditions. the electrophoresis codeposition of the bg and ha particles had been studied and the bg / ha graded coating, which is compact in the bottom layer and porous near the surface layer, had been prepared on the surface of the dental implant after the low temperature heat treatment ( about 740 ) and fast firing ( 50 - 80 / min, heat preservation time was 5 - 8min. )

    以bg微粉和ha微粉作為塗層原料，通過研究bg和ha微粉在非水介質中的分散情況和帶電特性，選擇冰醋酸為介質，使分散在其中的bg顆粒和ha顆粒表面均帶上正電荷，為電泳共沉積提供前提條件；通過對不同條件下bg 、 ha各自電泳沉積的研究，探索出了兩者電泳沉積的規律；通過對bg和ha在冰醋酸中電泳共沉積以及后續低溫（ 740左右）快燒（ 50 ? 80 min ，保溫5 ? 8min ）熱處理的研究，在鈦合金牙根種植體基體上成功制備出了底層緻密而表層多孔的bg ha梯度塗層。
  4. ( 3 ) by using the new method put out in ( 2 ), hugoniot data of no - porous samples of enstatite ( mg0. 92, fe0. 08 ) sio3 which initial density is 3. 273g / m3, were reduced and the modified hugoniot data shows very small dispersivity

    （ 3 ）用（ 2 ）中提出的新方法，對前人和本文的頑火輝石hugongiot實驗數據進行了初始孔隙度修正。結果顯示，不同研究者所得的hugongiot數據的分散性大大減小。
  5. Integrated the work on theory and experiment, the paper provides technical performance material at large about the automating and humidifying character of the centrifugal nozzle with firing pin type, high pressure and little aperture to the manufacture and user. with the valuable reference during the selecting the equipment and ascertaining the parameters, the users could select and control the humid parameter

    課題的理論與試驗兩方面工作相結合，為撞針型高壓小孔徑離心式噴嘴的霧化加濕性能提供了較為詳細的技術性能資料，為生產廠家和用戶在設備選型和參數選擇過程中，提供了有價值的參考，便於用戶正確而經濟地選擇、控制濕度參數，有效調節噴嘴孔徑、噴水初溫和噴水壓力的大小。
  6. Recently, using solid clay brick is gradually prohibited, so the new wall material is required to fill up the new architecture. many sections research on this field, using fly ash to develop new building materials is the mostly adopted method, among the new building materials, fly ash foamed concrete is a noticeable one because of its outstanding merits such as light weight, heat preservation, sound insulation and good resisting earthquake. using fly ash to develop foamed concrete can not only become fly ash into resources, but also provide a new kind of building materials for the innovation of wall materials, which has good economy and society ben efits

    近年來，由於墻改「禁實」政策的實施，市場急需新的墻體材料來填補新建築所需，許多單位相繼開展了各有關研究，綜合利用粉煤灰研製開發新型建材逐漸成為了主流，其中多孔混凝土特別是粉煤灰發泡混凝土，正以它突出的輕質、保溫、隔音、抗震效果好等優點，成為一種引人注目的建築材料，利用工業固體廢棄物粉煤灰研製發泡混凝土不僅能實現粉煤灰的資源化，而且還可為墻體材料的改革提供一種新型建築材料，具有較好的經濟效益和社會效益。
  7. ( 5 ) it was more precise for using darcy - weisbach formula to calculate the hydraulic pressure slope curve in the lateral line, but too complexity. although i - pm wu formula is simple, the estimated results were not agreement with the measured data. a coefficient including irrigation uniformity was presented to modify i - pal wu formula, and the results were agreement after using the coefficient

    （ 4 ）利用達西?韋斯巴赫公式計算微孔毛管的沿程水頭損失具有較高的精度，但計算復雜，吳義伯公式計算雖較簡單，但在灌水均勻度較差時誤差較大，為此對吳義伯公式進行了修正，提出了修正系數的計算經驗公式，取得了良好的結果，為簡易地下滴灌工程設計中水力計算建立了簡化公式。
  8. The important meaning in which this direction studied has lain in establishing the connection between the material science of concrete and civil engineering, analyse the strength in terms of material microcosmic or the mesoscopic, have important meaning to understanding, know the essential law of the strength of concrete. this text divides six chapters altogether. chapter one reviewed the pore structure in nowadays domestic and international research current situation, including the concrete examines research, research of the pore structure model and the research current situations of pore structure and strength relation of the pore method, have introduced some most important achievements of structure research of pore ; chapter two narrated much yardstick of the material mesoscopic structure of concrete and principle of examining pore technology of material of concrete, and the commonly used sign parameter in discussedding the pore and material pore of quito of cement and analyse, have explained that the influence factor of mip to the result of study of pore, has pointed out the limitation in mip in the pore structure ; analyse porosity and strength relation development course of model emphatically, and has carried on comparative analysis to the existing model, has pointed out the weak point of the original model ; on the basis of " ing integrate synthetically ", propose concrete pore structure compound body model and pore physical model of systemlex body ; chapter five carried on the corresponding test data to compares to the model parameter appearing in model of chapter four with and analyses, have received k value of the characteristic of strength of matrices of reflecting according to the method to return to analysis, and calculate the influence produced on the strength of concrete in revision that can probed into the content of cement, elastic mould and surface energy, exactness of the inspection model ; chapter six is the conclusion, according to studying the survey this text to some research conclusions of the pore structure and making corresponding prospect to the structure development of pore

    第一章回顧了孔結構在當今國內外的研究現狀，包括混凝土測孔方法的研究、孔結構模型的研究及孔結構與強度關系的研究現狀，介紹了孔結構研究方面的一些最重要的成果；第二章敘述了混凝土材料細觀結構的多尺度性及混凝土材料測孔技術的原理，並討論了水泥基多孔材料孔隙分析中常用的表徵參數，也說明了壓汞法測孔對研究結果的影響因素，指出了壓汞法在孔結構研究中的局限性；第三章是著重分析了孔隙率與強度關系模型的發展歷程，並對已有的模型進行了比較分析，指出了原有模型的不足之處；第四章在「綜合集成」的基礎上，提出了混凝土孔結構復合體模型和孔系統的物理模型，並模擬了該模型下由各單體並聯形成的復合體的斷裂過程，最後根據所建模型編制了相應的計算程序，可根據輸入的孔徑分佈與水泥含量等參數，實現混凝土理論強度的計算；第五章對第四章模型中出現的模型參數進行了相應的試驗數據對比分析，根據回歸分析的方法得到了反映基體強度特徵的k值，並從理論上探討了水泥含量、彈性模量和表面能的修正對混凝土強度計算產生的影響，檢驗模型的正確性；第六章是結論與展望，根據研究綜述了本文對孔結構的一些研究結論並對孔結構發展作了相應的展望。
  9. In chapter 5, based on biot ' s theory for anisotropic fluid - saturated porous media, the rayleigh waves in orthotropic non - viscous fluid - saturated porous media are studied

    在第5章中，以biot的各向異性液飽和多孔介質理論為基礎，研究了正交各向異性無粘流體飽和多孔介質中瑞利波的傳播特性。
  10. Therefore the existing budget accounting regulation needs be perfected deeply very much. in this background, originating from headspring of budget accounting this thesis analyses the existing problem of working and compares some correlative item between china and america. thus give the reformation of budget accounting regulation some advices in the end

    我國預算會計改革是一個龐大復雜的研究課題，本文只是筆者的一家之言、一孔之間，且由於時間倉促，加之水平有限，文中錯誤之處在所難免，希望各位老師和同學們不吝指正，筆者也會在今後的學習和工作中繼續關注、研究和完善。
  11. Meanwhile, according to the reduced theoretic of the open - web truss, the strength simplification computational method are proposed, and in comparison of the theoretical calculating value with the tested one and the behavior analysis of the tested beams during the process, the hypothesis and the theory of the beam are verified and the stress distribution of the circular hole castellated beam is also obtained

    通過費氏空腹桁架簡化計算理論值與實測值的對比分析以及對試驗梁在試驗過程中的性態分析，驗證了理論計算及各項假設的正確性，分析得出圓孔蜂窩梁圓孔周邊應力分佈特徵；並通過撓度分析，提出了實用的簡化計算式。
  12. In chapter 2, based on generalized characteristics theory, characteristic analysis is carried out on the problem of stress wave propagation in orthotropic fluid - saturated porous media under longitudinal impacting

    在第2章中，根據廣義特徵理論，對正交各向異性液飽和多孔介質在縱向沖擊載荷作用下的應力波問題進行了特徵分析。
  13. This research job analysised the extending roll pass system the finish roll pass system and the ultimate roll groove. the mathematical models and experience formulations used for roll pass design are corrected according to the basic theory and the practical experience of the engineerings. the thread steel bar card was set up with the visual program tool - visualbasic6. 0, based on the method of the structural program design

    本課題通過對螺紋鋼延伸孔型系統、精軋孔型系統及成品孔型的構成和設計方法的分析，結合螺紋鋼孔型系統的基本設計理論和工程技術人員的實際生產經驗，對以往孔型設計過程中所使用的數學模型、經驗公式等進行了修正，以結構化程序設計方法為基礎，採用可視化編程工具visualbasic6 . 0建立了螺紋鋼計算機輔助孔型設計系統。
  14. With the further economic growth and the implement of development of the western regions, hydroelectric construction in our country is undergoing rapid growth, anumber of high - dam power - station is in building or in programming. in view of its higher - head and larger magnitude of spill structure outlet, it is difficult for conventional concrete or reinforced concrete structure of pier and pier room to support its vast water pressure. coupled with the improvement of prestressed method, it has been the noteworthy tool in solving the problem

    隨著我國經濟的加速發展及西部大開發戰略的實施，我國水電事業也迎來了迅猛發展的大好時機，一批高壩水電站正在建設或規劃之中，其泄水建築物孔口及水頭愈來愈大，常規混凝土或鋼筋混凝土閘室閘墩結構難以承受如此之大的水推力作用，隨著預應力技術的成熟，這一技術已成為解決該問題的關鍵技術措施之一。
  15. The " benevolence " in the analects, to the exclusion of incorrect resources and misunderstandings, falls lexically into four categories, but which in nature all mean " loving others ", as testifies that the fundamental connotation of the doctrine of confucian benevolence consists in " loving others " only

    排除不正確的材料與誤解， 《論語》中的「仁」雖從詞義上可分為四類，但其實質皆是「愛人」關愛他人，孔子仁學的真正內涵，只有「愛人」一項，而沒有其他。
  16. Considering the similitude law for shaking table test, we study the test results and obtain some conclusions which are a ) generally, the silty soil in test box liquefies and the liquefied time has relation with the amplitude of acceleration, b ) when the intensity is on and above eight degree, the silty soil deposit will be liquefied dramatically, c ) the relationship of the pore water pressure is relevant to the cycle loading which represents when the cycle loading ranges from little to great, the relationship is represent as a concave curve, or else as a protruding curve and tends to stability. ( 3 ) based on the triaxial compression test and the resonant column test, some studies are made such as a ) the duncan - chang parameters of constitutive model, b ) the dynamic shear modulus ratio and c ) the damping ratio of the site soil deposits. in order to deal with the test data, a computer program is compiled

    （ 2 ）利用小型振動臺進行了k _ 0固結狀態下粉土的振動液化模擬研究，通過分析正弦荷載作用下的試驗資料，驗證了粉土的孔隙水壓力增長模式的合理性；從微分方程推導了基於土體振動臺模型試驗的相似律，並從模型實體、孔壓時程曲線和相似律等方面做出了分析，得出了如下結論：在小型振動臺試驗中，模型箱中的粉土都發生了液化，液化的時刻和輸入加速度幅值有關，而對頻率的變化不太敏感；粉土在相當於8 9度地震烈度的加速度幅值作用下可能產生嚴重的液化；孔壓的增長曲線形狀與施加的荷載有關：當施加荷載為由小到大的形式時，曲線形狀為上凹的曲線；當施加荷載為等幅的正弦荷載或荷載幅值由大到小時，曲線形狀為上凸的曲線，且逐漸趨于穩定。
  17. 5 confucius was rather shocked when he heard the words to the point. he considered in these days why a sage who can rejuvenate state can ' t be favored by the court

    孔子聽到這樣正中要害的忠告，霎時頗感震驚。他暗自思忖，這些日子以來，自己心? ? @直都在苦苦思索;為什麼一個能夠興邦強國的賢者，卻始終得不到朝廷的青睞呢？
  18. Combined with development of the products, the research emphasis in this paper is focus on the studies of the high - rate discharging performance at different temperature. 1. in the research of the discharge performance with high rate, the results of different effects including thickness of positive electrode, materials of hydrogen storage alloy, concentration of the electrolyte and separators

    論文在實現研究目標的過程中，結合產品的研製，重點對電池的高倍率放電性能和溫度性能進行了研究：一、在提高電池大電流放電性能的研究中，比較了不同正極板厚度、不同貯氫合金材料、不同濃度電解液及不同材料隔膜等對電池大電流放電平臺的影響，並從電極反應動力學和多孔電極的角度分析了極板厚度對電池高倍率放電的影響。
  19. The numerical simulations show that the phase plane and amplitude plane in orthotropic fluid - saturated porous media is not paralleled to each other any more though the dispersion caused by the fluid is omitted. it is one kind of non - homogeneous wave. the maximum attenuation is no longer

    指出由於介質的各向異性，盡管忽略了流體粘度引起的粘度耗散，正交各向異性液飽和多孔介質中瑞利波的相平面和幅平面亦不再重合，為非均勻波，最大的衰減不再沿波傳播方向。
  20. Measure your center shot from the rest hole to the center of the arrow and tell me what it is. 3 / 16 " can ' t be right. 7 / 8 " to 13 / 16 " should be correct

    量一下平衡中心相對于搭箭孔上箭桿中心點的所在位置，告訴我是多少. 3 / 16 ?不正確. 7 / 8 ?至13 / 16 ?才是正解
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