推力下限 的英文怎麼說

中文拼音 [tuīlìxiàxiàn]
推力下限 英文
lower thrust limit
  • 推 : 動詞1 （向外用力使物體移動） push; shove 2 （磨或碾） turn a mill or grindstone; grind 3 （剪或削...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 下 : 下動詞1. （用在動詞后,表示由高處到低處） 2. （用在動詞后, 表示有空間, 能容納） 3. （用在動詞后, 表示動作的完成或結果）
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 推力 : visatergo; soot; propulsive force; thrust; momentum thrust
  1. Fist of all, on the basis of the research of agone boffins, this author investigates the interaction mechanism of bolts and rock, and introduces the elastic ? lastic analytical resolution which is consist of the liner structure, the equivalent reinforced wall rock and the original wall rock in the simple loading from the equivalent well - proportioned view ; this solution is very important meaning for the engineering design. on the basis of coulomb friction model, the author introduces the finite element equation of the contact problem in order to provide the academic foundation for the application of msc. marc. finally, combining the engineering practice of the non - linear analysis of shield tunnel through yellow river of the south - north water transfer and using the model of friction, the author researched the evolution law of stress and displacement field in the structure of grouted rock bolts, and analyzed the effect to the stress and deformation of surrounding rock mass due to anchor supports

    首先，在前人研究成果的基礎上，對錨桿與圍巖的相互作用機理進行研究，利用全長錨固錨桿的中性點理論，從等效均化的角度來考慮錨桿對圍巖的加固作用，並推導了在簡單荷載作用下，含有襯砌、等效加固后的圍巖、原始圍巖三者的彈塑性解析解，對工程設計有著重要的參考意義；在數值模擬方面，以考慮錨固圍巖滿足規則化庫侖摩擦模型為基礎，利用虛功原理推導了接觸問題的有限元方程的計算格式，為開發運用大型商用有限元軟體msc . marc提供了理論根據，也形成了本文的理論基礎：最後，論文以南水北調東線穿黃隧洞穩定性分析項目為工程實例，利用本文所述的接觸問題的摩擦模型理論，對錨桿支護結構的應力場、位移場的變化規律進行了研究，分析了加錨支護對隧洞圍巖應力、變形的影響。
  2. The integral equations governing the three - dimensional viscous flow inside the turbo - machinery in the rotating coordinate system are presented in this paper, the viscous effects are simulated by the distributed body force described by professor denton j. d. the time - marching method and explicit finite volume difference scheme are employed to solve the flow inside the turbo - machinery

    本文給出了相對旋轉坐標系下葉輪機械內部三維粘性流動的守恆型積分型方程組，利用dentonj . d .教授的粘性體積力法來模擬粘性對葉輪機械內部流動的影響，採用時間推進法和有限體積差分格式對葉輪機械內部的流動進行求解。
  3. Shandong tengzhou huacheng metal co., ltd. enjoyed free mport anf export right awaeded by the state evonomic and trade co mmissiom, with 20years histoy of specolozed in metalwork. our favtory lovated in beauty spot of honghe everglade near weoshan lake in the south - eest of shandong rovince. we regisstered fund is 22 800 000rmb, and thr acreagr id 30000 squares, anthe workshop is 12000 squares, with 358 workerd ( not include the 16 filiale ) but 21 of them are advanced engineers, advances technology, completely testing equipment, good quantity of produces, and advance technology about surface producing, under the spirit of together effort with our clients, our company would make a new view on the surface making in many fields, such as : airplane, vessel, armory, car, container and so on

    山東省滕州市華成金屬製品有限公司是一家具有中華人民共和國自營進出口資格的企業，已有20多年專業生產金屬磨料的歷史，公司位於中國魯西南地區的微山湖紅荷濕地風景區，公司注冊資本2280萬元人民幣，工廠面積30000平方米，車間面積12000平方米，員工358名（不包括下屬16個分廠）其中高級工程技術人員21名，技術力量雄厚，質量檢測手段完善，產品質量穩定，具有先進的表面處理技術.公司本著與客戶共同努力的觀點，在材料和技術應用上不斷創新，不斷提高，把飛機，造船，兵工，車輛，集裝箱等行業的表面處理，強化，推向一個嶄新的局面
  4. This thesis also introduces some kinds of the jointing of cable and membrane strucfores. an open - air palestra has been designed in this thesis. the force density method has been used to analyze the shape, and the nonlinear finite method has been used to analysis the loads

    最後，本文還採用文中推導的離散方法，通過力密度法對某風雨操場進行形態分析，並通過將找形結果用非線性有限元法在無荷載狀態下計算結構的應力，結果表明本文推導的方法找形精度是足夠高的。
  5. International property management ltd and paramatta estate management ltd respectively received the merit award for best property management company in osh through their implementation of quality practices of workplace safety and health. dr ng tat lun bbs jp, chairman of the occupational safety and health council said, " the competition on best property management companies were first introduced in the construction safety promotional campaign in 2004 to recognize the achievements and outstanding performance of various property management companies, and to heighten the safety awareness of workers in the property management sector

    富城集團憑著卓越的職安健水平，在職業安全健康局主辦之建造業安全推廣活動2004分享會暨嘉許典禮上，榮獲最佳物業管理公司職安健銅獎，而其屬下之百得物業管理有限公司及國際物業管理有限公司，亦分別獲最佳物業管理公司職安健優異獎，印證該集團致力提高工作環境的職安健水平的卓越成績。
  6. Through the analysis we found that the effect will become more obviously with the increase of thickness or width of superstratum and the decrease of the coefficient of foundation bed ; ( 3 ) anisotropy and nonlinear elastic f. e. m. model has been established and the effect of stress dispersion in compound two - layer foundation was analyzed on the base of the model. from the analysis we can conclude that the coefficient of subsidiary stress dispersion will amplify with the increase of thickness or width or stiffness of back - up coat ; ( 4 ) the formula which can be used in conventional calculation has been deduced for calculating the coefficient of subsidiary stress dispersion and it also has been affirmed to be reasonable through the checking calculation ; the whole theory of compound two - layer foundation has been brought forward in this paper and it ' ll enrich the theory of composite foundation

    針對以上問題本文做了以下一些工作並得到若干結論： （ 1 ）提出了「復合雙層地基」的概念，並通過工程實例證明此概念的提出有其合理性和必要性； （ 2 ）用彈性地基梁理論證實了復合雙層地基確有應力擴散效應，且擴散效應隨上覆硬層厚度、剛度的增加而增大，隨下臥層基床系數的增大而減小； （ 3 ）建立了非線彈性、各向異性有限元模型，並以此為基礎分析了復合雙層地基的應力擴散效應，得到附加應力系數隨加固層厚度、寬度、剛度的增加而增大的結論； （ 4 ）推導了可用於常規計算的復合雙層地基應力擴散系數公式，並代入工程實例進行了驗證。
  7. ( 1 ) the posterior distribution of the coefficient matrix, the precision matrix and covariance matrix, and their bayesian estimation under the matrix normal - wishart conjugate prior distribution. ( 2 ) the deduction of the predictive distribution, proved to be matrix t distribution. ( 3 ) the designs of bayesian multivariate mean value control charts in terms of the relationship between the multivariate wishart distribution and x2 distribution, the bayesian process capability index and its confidence lower limi

    通過多方程模型系統的統計結構，證明了矩陣正態? wishart先驗分佈是模型參數（ ， ）的共軛先驗分佈，研究了該先驗分佈下模型系數矩陣、精度陣和協方差陣的后驗分佈及其貝葉斯估計，對模型預報密度函數進行了嚴格的數學推導，並將其應用於多元質量控制領域，構造了貝葉斯均值向量聯合控制圖；結合wishart分佈與x ~ 2分佈之間的關系，設計與推斷了貝葉斯多指標過程能力指數及其貝葉斯置信下限。
  8. Dynamic control of the limit water level belongs to non - structural measures of reservoir operation. with the analysis of the cause and rule of flood in the catchments and taking advantage of hydrology and metrology information, the operable method can be obtained which not only satisfies the flood prevention but also takes full advantage of flood resources, and the upper and lower limits of the limit water level are determined with serial hydrology calculation. then, the rule of using the upper and lower limits is put forward to reach a beneficial flood operation with small risk

    汛限水位動態控制方法屬於水庫風險調度的非工程措施范疇，通過分析流域洪水的成因和庫區降雨及致洪規律，結合水庫的蓄泄能力，積極慎重的利用水文氣象預報信息，研究既能滿足防洪要求，又可充分利用洪水資源的可操作性的調度方法，利用水文系列的連續演算方式推求汛限水位的變化范圍，提出使用汛限水位上下限的原則，達到風險較小、效益較大的目的。
  9. This paper, in allusion to damage of expansion joint of bridge, introduces a sort of new structure of jointless device - semi - integral abutment jointless bridge, and establishes model of general structure finite element of this bridge, and in details analyses its qualities of stress. the model considers the interaction of superstructure - substructure - soil. resistance of the soil behind abutment adopts still soil pressure and elastic resistance when the temperature rising, but active soil pressure when dropping. analysis of qualities stress of bridge includes of action of dead load, car load, temperature load of season character. taking an 100m length pc semi - integral abutment jointless bridge as instance, the paper establishes the model of plane frame by applying large common software - anasys, and analyses it by elastane and large deformation to imitate character of stress and deformation of general bridge. at the same time corresponding models of finite element of joint bridge and integral abutment bridge are established, and unique stress and performance of structure of semi - integral abutment jointless bridge are researched by comparing and analysing character of three different models under same loading, and controlling factor of design and constitution are generalized. in conclusion, for semi - integral abutment jointless bridge, on one hand shear, moment and deflection of the main beam and axis force of substructure are approximate with that of joint bridge, and integral stifmess of structure is increased and damage of expansion joint is eliminated, on the other hand there is axis force in main beam, shear and moment of substructure are bigger than that of joint bridge. in all this type of jointless bridge has rational stress and is worth of application and popularization

    半整體式橋臺無縫橋梁計算模型考慮了上部結構-下部結構-土的共同作用；臺後土抗力升溫時採用靜止土壓力加彈性土抗力，降溫時採用主動土壓力；分析橋梁受力性能時考慮了結構自重、車輛荷載和季節性溫變荷載的作用。以一座橋長100mpc半整體式橋臺無縫橋梁為實例，採用大型通用軟體ansys建立平面框架模型，進行彈性、大變形分析，模擬全橋受力和變形特點；同時建立與此對應的有伸縮縫橋梁和整體式橋臺無縫橋梁有限元模型，通過三種橋型同步加載對比分析，研究半整體式橋臺無縫橋梁獨特的受力特點和結構性能，總結其設計控制因素和構造要求。通過本文研究知：半整體式橋臺無縫橋梁主梁的剪力、彎矩、撓度和下部結構的軸力與梁式橋相近，結構整體剛度增大，併除去了伸縮縫病害；但主梁增加了軸力，下部結構剪力、彎矩較梁式橋大；綜合分析是一種受力合理有實踐和推廣價值的橋型。
  10. As a result, there is a large body of recent research on how to develop and manage entrepreneurial human capital effectively. but most of the research is limited to descriptive and abstract theory. it could n ' t develop a complete theory system of entrepreneurial human capital and a helpful counterplan construction

    國內許多學者在現實問題推動下，對企業家人力資本的開發和管理問題進行了卓有成效的研究，但這些研究多局限於描述性和理論性研究，一直沒有形成一個系統的企業家人力資本理論和對策框架。
  11. Then the general plan of underwater vibrators is put forward. in chapter 3, combining fluid - solid coupling theory and mechanical vibration theory, we get the coupling equation of moving parts and water. the dynamic characteristics of moving parts are studied with theory of finite element, and additional mass of moving parts is found in fluid - solid coupling field, which makes vibrator ' s natural frequency descend and amplitude - frequency curve downward shift

    第三章運用流固耦合理論和機械振動學理論相結合的方法建立運動部件與水的耦合運動方程，利用有限元法對其的動態特性進行了研究，得到了在流固耦合場下運動部件存在的附加質量，該附加質量導致固有頻率下降，單位推力下的加速度頻響曲線整體下移。
  12. In this thesis, finite volume method and dual - time stepping method are employed to solve the 3 - d unsteady euler equations. the unsteady flow field around a finite - span flapping wing is simulated. the lift and thrust of the flapping wing for different cases are calculated

    本文運用有限體積法結合雙時間推進技術求解三維非定常歐拉方程，模擬了有限翼展機翼在同時具有上下拍動和俯仰運動狀態下的非定常流場，計算了不同狀態下撲翼的升力及推力，分析了各個影響因素對撲翼氣動特性的影響。
  13. Since fem is very easy to be written into computer programs and widely effective to most kinds of mechanical problems, fem has been developed very quickly under the requirements of industry since its concept appeared in 50 ' s last century. based on hu - washizu variational principle, t. h. h

    自上個世紀五十年代出現有限單元概念以來，有限元方法因其特別適合在計算機上實現，並對各種力學問題表現出廣泛的適用性，因而在工業應用需求的推動下，一直得到廣泛的關注，發展非常迅速。
  14. Secondly, according to the change of calculation formula when prestress were added to the chapter of concrete tower drum, the paper has given the calculation formulas of prestressed concrete tower drum in limited states of carrying capacity and normal serviceability

    其次，針對高聳規范混凝土塔筒一章中增加預應力后，塔筒計算公式發生的變化，本文對預應力混凝土塔筒在承載能力極限狀態和正常使用極限狀態下的計算公式進行推導。
  15. Simulation results indicate that the closed - form guidance law with robustness is fit to the finite propulsive reentry mission and insensitive to the initial position errors, propulsion direction errors and observation errors

    模擬結果表明，該閉路初制導能夠完成有限推力情況下的再入初制導任務，對初始位置誤差、推力方向偏差和測量誤差不敏感，具有一定的魯棒性和適應性。
  16. Time - optimal orbital transfer under finite thrust

    有限推力下時間最優軌道轉移
  17. Thus, after the reform, propelled by a series of forces, anewrelationship structure between the grass - roots governments and the country society has gradually emerged, that is, the interacting relationship structure limitedly guided by the township government. this change in grass - roots governments - country society relationship structure indicates that after the reform, although the township governments still have superiorities over against the country society in running of power, arrangement of rural resources, realization of interests, the country society has gain more and more self - developing space, self - owned resources and some self - integrating capability. furthermore, the country society has begun to interact with the township governments in the public spheres

    改革后，在一系列動力機制的推動下，基層政權與鄉村社會的關系結構已朝向鄉鎮有限主導的互動關系結構轉變，這一變遷意味著，在改革之後，鄉鎮政權雖仍在與鄉村社會的關系結構中占據主導地位，但鄉村社會逐漸從原有的行政性束縛中解脫出來，擁有了一定的自主空間、自主資源、和自主整合能力並開始與鄉鎮展開了體現著鄉村自主利益的雙向互動。
  18. This paper is concerned with the evaluation of the seismic resistant dynamical characteristics of composite foundation. the dynamical finite element numerical analysis is performed for this purpose. comprehensive analysis has been made to research characteristics of ground motion and ground seismic resistant of composite foundation to promote its application in seismic area

    本文通過動力有限元數值分析對復合地基的抗震特性進行了評價，較全面地分析了地震作用下復合地基的地面運動特性和地基自身的抗震特性，旨在推進復合地基這一地基加固形式在地震區的推廣應用。
  19. The other method is pontryagin maximum value principle dealing with low thrust control problem. however when the system is very complex, especially when the system contains uncertain factors, the method is not effective

    但在多指標的要求下，這種方法難以求得最優解；另一種方法是應用pontryagin最大值原理解決有限推力最優控制問題，但對復雜的或者含有不確定因素的系統往往難以奏效。
  20. Education is increasingly international in character driven by trends which include the information communications technology revolution, employment markets transcending national borders and a geographically mobile population of students, teaching staff and researchers

    在通訊技術的變革，逐漸消除國家界限的雇傭市場和地域流動性越來越大的學生，教師和研究人員等多方面力量的推動下，教育變得越來越國際化。
分享友人
分享到 Line

分享到臉書