面積收縮 的英文怎麼說

中文拼音 [miànjīshōusuō]
面積收縮 英文
contraction in area
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 積 : Ⅰ動詞（積累） amass; store up; accumulate Ⅱ形容詞（長時間積累下來的） long standing; long pending...
  • 收 : Ⅰ動詞1 （把攤開的或分散的事物聚集、合攏） put away; take in 2 （收取） collect 3 （收割） harvest...
  • 縮 : 縮構詞成分。
  • 面積 : [數學] area
  • 收縮 : 1 （由大變小; 由長變短） contract; shrink 2 （緊縮） concentrate one s forces; draw back 3 take u...
  1. Construction of a mass concrete is in the construction process, because of cement let out in large quantity hydration heat and surface of a mass concrete let out heat, make its temperature, humidity cause to ascend and descend, and it causable constringency transform will be unavoidable

    大體積混凝土結構在施工過程中，由於混凝土中水泥熟化時放出大量的水化熱及其隨后的表面散熱，使其溫度、濕度出現升降變化，並由此而引起的收縮變形將是無法避免的。
  2. On the surface of phbv spherulite, some concentric ring like patterns will occur. based on the procedure of the formation of ring - like patterns, the possible mechanism is given

    在球晶的表面出現有同心圓環狀條紋，經實驗驗證為表面的不平整所導致，形成機理主要可能是結晶過程中的體積收縮。
  3. Treatment of the spinel limn2o4 with aqueous acid produces - mno2. x - ray diffraction and atomic absorption spectroscopy show that - mno2 with lattice constant of 0. 806nm preserves the structural framework of the limn2o4 and the conversion of limn2o4 to - mno2 results in some contraction of the lattice

    利用limn2o4與稀酸作用制得- mno2 ，經xrd 、原子吸收光譜（ aas ）分析表明- mno2仍然保持了尖晶石的面心立方點陣，晶胞參數0 . 806nm ； limn2o4經過酸處理、鋰離子脫出后晶胞體積發生了收縮。
  4. Shock tube ; conical convergent section ; detonation ; finite volume tvd scheme

    激波管收縮截面爆轟有限體積tvd格式
  5. The numerical simulation of axisymmetric two - dimensional shock tube is studied, which has a conical convergent section, and its driving gas is the hot product of hydrogen oxygen detonation. finite volume tvd scheme is adopted and the mesh is local orthogonal. the primitive equations are euler s equations of multi - component flow. the new method of eliminating numerical oscillation at the interface of two materials is extended to two dimensions. the mechanical character of this shock tube is analyzed

    對由前向爆轟產生驅動氣體並具有局部錐形收縮截面的軸對稱激波管利用兩相常比熱完全氣體的歐拉方程組和有限體積tvd格式在局部正交的網格上進行了二維數值模擬。將消除兩種介質界面處數值振蕩的新方法成功地推廣到二維情況。分析了該激波管的力學特性。
  6. The fall in china ' s grain harvest is due largely to a shrinkage of the grain harvested area from 90 million hectares in 1998 to 76 million hectares in 2003

    中國糧食收獲量的下降，最大的原因是糧食收獲面積從1998年的9000萬公頃縮減到2003年的7600萬公頃。
  7. We research the causes of concrete cracking, develop the high performance anti - cracking additive, optimize the concrete mix and construction techniques, increase the stability of concrete volume by shrinkage compensation, enhance splitting tensile strength, and can meet demand of high workability of fresh concrete. in the study, a thorough investigation of this problem is made from all points of view, with the aid of various modern measurement & testing technology and different theories & methods in surface physical chemistry, structural chemistry, solid - state chemistry, composite materials, fracture mechanics, etc. our research results have shown that the various shrinkage of concrete cause concrete cracking in building engineering, such as autogenous shrinkage, dry shrinkage, temperature shrinkage, plastic shrinkage, carbonized shrinkage, etc

    目前，解決混凝土開裂的方法是綜合的，我們調查研究了混凝土開裂的原因，開發研製了高性能抗裂外加劑，優化混凝土的設計和施工方法，並通過補償收縮達到混凝土體積穩定，提高抗裂強度，滿足混凝土拌和物高工作性能的要求。本研究採用多種測試技術，應用表面物理化學、結構化學、固體化學、復合材料學、斷裂力學等多學科的理論與方法，從不同的角度進行深入的研究和探討。通過調查研究建築工程中出現的混凝土開裂、滲漏問題，發現混凝土在非荷載作用下開裂主要是由混凝土的自收縮、乾燥收縮、溫度收縮、塑性收縮、碳化收縮等各種收縮變形引起的。
  8. The study on salc includes : 1 ) the study on the harmonization between aeration rate and melts thickly rate ; 2 ) the study and application of the new multi - function composite additive ( nmca ) ; 3 ) the study on the durability of salc ; 4 ) the designation of the structure of new multi - functional unbearing compound wall and fast equipment mold, etc. the results show : the additive can improve the harmonization of the workability and mechanics characteristic of salc to a certain extent ; improve the volume stability of salc under different environment by enhancing the resistance to the freeze and thaw, dry and wet circle and drying shrinkage

    在salc的研究方面，主要包括發氣速度和稠化速度的協調性研究、新型多功能復合外加劑的研製、耐久性能的研究以及新型多功能非承重復合墻體結構及其澆注成型的快速組裝模具設計等內容；結果表明：科學合理的引入輔助外加劑在一定程度上使salc材料的工作性及相應物理力學性能得以最佳匹配，增強了salc材料對凍融循環、干濕循環及乾燥收縮的抵抗能力，使salc在不同的環境下均具有較好的體積穩定性。
  9. The next this text is based on the appearance theories, according to the characteristics that the temperature dispersion of super thick mass concrete planceer of high - rise building primarily is an even difference in temperature and an even constringency, suppose the level shears are line with the displacement, adopting a big physical volume concrete of planceer in flexibility foundation for plank computing model, from theoretically deducing the difference in temperature of mass concrete contracting should basic formula of dint, and analysis the crack rule and the influence factor of mass concrete temperature contract, and bringing up the theory calculation method about temperature stress of mass concrete and the biggest whole method that sprinkle the length, at the same time according to basic formula of the temperature stress of mass concrete and the concrete construction experience, bringing five technique measures to prevent the temperature crack of mass concrete

    其次本文以唯象理論為基礎，根據高層建築超厚底板大體積混凝土承受的溫差主要是均勻溫差和均勻收縮的特點，闡述了大體積混凝土溫度應力理論計算的簡化方法和最大整澆長度的計算方法，同時根據大體積混凝土溫度收縮應力基本公式和大體積混凝土結構施工經驗，提出了防止大體積混凝土溫度裂縫的五項技術措施。最後本文以廈門郵電大廈3 . 5m超厚底板施工為實例，從大體積混凝土溫度應力計算、混凝土保溫材料厚度計算、混凝土配合比的確定，鋼筋工程、模板工程、混凝土的泵送和澆築以及大體積混凝土內部溫度的監測和後期養護等方面進行了理論應用。
  10. First according to the fact that tangential components of the evolution do not affect the geometric shape of the evolving curves, we introduce the evolution equation of geometric quantities for the general planar curves. then we describe the work of gage - hamilton briefly. last we consider a special curvature flow of curve which evolves with speed function of the principal curvatures along the inner norm and show that convexity of the curve is kept and its length and area are contracted if the initial closed curve is smooth and convex. so the final shape of the curve will be a point in finite time

    首先根據曲線在切向分量上發展是不影響曲線的發展形狀，我們引入了曲線的一些幾何變量的發展方程；其次我們簡要地回顧gage - hamilton研究曲線發展的一般步驟；最後我們考慮沿曲線的內法線以曲率的函數為發展速度的一類特殊的曲線族，證明了在初始曲線為凸的閉平面簡單曲線條件下，曲線將保持凸的，並且它的面積和周長將同時收縮，並在有限時間內成為一個點。
  11. And the value drop to the lowest at ph = 0. 8. as the increase of heat treatment temperature, the pore size distribution peak of sio2 microspheres is very narrow, meanwhile the specific surface area is the smallest before 160 c. the polymer template is removed at 350 c, so the pore structure of sio2 particles has a big change which involve the increase of specific surface area and the broaden of pore size distribution peak. with the continuous raise of temperature the sio2 network will shrink little, as a result the average pore size will decrease, but the specific surface area has no obvious change

    結果發現：二氧化硅膠體顆粒均勻分佈於脲醛聚合物網路中，煅燒去除有機模板后微球表面變粗糙，而粒徑沒有明顯變化； ph值較小時，復合微球中聚合物含量較大，而ph值較大時，得到復合微球結構鬆散，因此熱處理后的二氧化硅微球孔容及平均孔徑都較大，而在ph = 0 . 8時，得到最小值；武漢理工大學碩士學位論文隨著熱處理溫度的變化，小於160時，空分佈較窄，而比表面積較小，在350時，由於有機模板的去除，微球孔結構發生突變，比表面積明顯增大，而孔徑分佈變寬，溫度繼續升高時，二氧化硅網路發生收縮，平均孔徑變小而比表面積由於有機炭化物的完全去除沒有太大變化;微球中的微孔在熱處理過程中處于平衡狀態，分佈沒有太大變化。
  12. Applying the theory of polygon expanding and shrinking, a new critical area calculation method for soft and hard faults is given. a total formula is presented by dividing vlsi interconnects into two parts, contacting and conducting path, to calculate its critical area. finally the effect of hard and soft fault of different size defect on circuits is given by calculating soft fault area of a 4x4 shift register

    本文基於多邊形膨脹收縮理論給出了一種新的軟、硬故障關鍵面積計算方法，該方法首先將vlsi中的互連線分成導電通道和接觸區兩部分，然後分別計算其軟、硬故障關鍵面積，最後將這兩部分相加起來得到總的軟硬故障關鍵面積。
  13. For the larger area contraction ratio, the flow condition becomes more complicated, the discharge of the tunnel and the change of the negative pressure in the cavity pocket will be reduced, but the cavity diameter of the level rotary cavity flow and the dissipation ratio of the system will be increased

    面積收縮率較大時，流態變化復雜，泄流量和環流空腔內的負壓的變化減小，但空腔環流的空腔直徑和泄洪洞的消能率增大。
  14. The intermediate - temperature sofc ( solid oxide fuel cell ) ’ s electrolyte with perovskite - type lsgm ( la _ ( 0. 9 ) sr _ ( 0. 1 ) ga _ ( 0. 8 ) mg _ ( 0. 2 ) o _ ( 3 - ) ) was synthesized using advanced pechini method and solidification method. the thermal and electrical properties of the sintered samples ( synthesized by two different methods ) were measured and compared by thermal expansion and ac impedance spectroscopy ; the phase transformation process and inner structure were measured and compared by xrd, dta - tg and ac impedance spectroscopy. the research results show that the electrolyte synthesized by advanced pechini method has several advantages, such as fine pre - powders, low sintering temperature, reduced or eliminated impurity phases and high conductivity etc. so, the apm is ideal method to synthesize lsgm

    採用改進的檸檬酸法（以檸檬酸和edta乙二氨四乙酸為復合絡和劑，檸檬酸為燃料）和固相法分別制備了具有鈣鈦礦結構的中溫固體氧化物燃料電池的電解質材料lsgm （ la _ （ 0 . 9 ） sr _ （ 0 . 1 ） ga _ （ 0 . 8 ） mg _ （ 0 . 2 ） o _ （ 3 - ） ） ，用差熱?熱重分析（ dta / tg ） 、 x光衍射分析（ xrd ） 、交流阻抗譜技術（ ac - impedancespectra ） 、比表面積分析（ bet ）和燒結收縮率曲線等手段對產物的熱分解過程、物相轉變和內部結構等進行了表徵，並對由這些粉體燒結而成的固體氧化物燃料電池的電解質材料的電導率進行了檢測。
  15. On one hand, the stress in mass concrete is caused because of the difference between internal temperature and external one. on the other hand, with the concrete solidifying, the tensile stress will appear due to concrete ' s shrinkage restrained by base rock

    大體積混凝土一方面由於內外溫差而產生應力，另一方面，由於混凝土的凝固，收縮變形受到約束，混凝土會產生拉應力，一旦溫差引起的應力和收縮變形引起的應力超過同齡期混凝土的極限抗拉強度，混凝土就會產生裂縫。
  16. Through the experiment, it is found that, when the compression percentage closes to 20 %, the compression pressure at the far end changes quickly and differs from that at the near end ; and when the compression percentage is less than 20 %, the compression pressure at the near end rises quickly and that at the far end transits from instability to reverse distribution state

    實驗研究表明，冠狀動脈面積收縮接近到原來的20 %時，遠段收縮壓迅速與近段收縮壓分離；當冠狀動脈面積收縮到小於原來的20 %時，近段收縮壓迅速上升，遠段壓力從不穩定狀態迅速過渡到收縮壓呈反向分佈狀態。
  17. The influence of the area contraction ratio of rotary flow generator on the hydraulic characteristics of level rotary flow has been investigated by the hydraulic model test of an internal energy dissipation tunnel

    摘要通過模型試驗，研究了起旋器出口面積收縮率對水平旋流泄洪洞水力特性的影響。
  18. The area contraction ratio has obvious influence on the flow pattern, discharge, wall pressure and air pressure inside level rotary flow

    研究發現面積收縮率對流態、泄流量、壁面壓強和空腔內的氣體壓強均有較大的影響。
  19. The mechanism of physical damage of carbon fibers was clarified firstly. the precursor which attached on carbon fibers changes to inorganic ceramic under high temperature with large volume shrinkage which appearing at cracks with fiber traction and the cracks are mainly vertical to fiber axis. because of mismatched coefficients of thermal expansion, carbon fibers suffer multiple thermal stresses and are damaged

    首次探明了碳纖維熱應力物理損傷機制，即碳纖維表面附著的先驅體在高溫下無機化形成陶瓷體，同時伴隨著大的體積收縮，在碳纖維的牽引下，基體的體積收縮以開裂形式出現，裂紋的取向以垂直於纖維軸向為主，由於碳纖維與基體熱膨脹系數失配，致使碳纖維在降溫過程中受到復雜熱應力，引起碳纖維損傷。
  20. The hydroxyl - terminated and carboxyl - terminated pu - prepolymer were prepared and cured respectively with pf. the molecule structures of two composite systems were characterized by means of ft - ir, and cured - sample morphologies were analyzed by sem. by means of the measurement of properties of pf, impact strength, volume shrinkage and thermal stability of pf / pu composite, effect of pu on pf has been investigated and the toughening differentials have been compared, then two kinds of toughening mechanisms have been discussed

    文中利用紅外光譜對pf / pu共混物的分子結構進行了定性分析，利用掃描電鏡對共混物沖擊斷面形貌進行了表徵、用簡支梁沖擊試驗機按國標測試pf / pu共混物的沖擊強度，並按國標測試共混物體積收縮率，最後利用熱重分析對pf / pu共混物的熱穩定性進行測試。
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