mass shell 中文意思是什麼
mass shell
解釋
質殼-
The dust shell is she condensate of the mass ejected by the central star.
塵埃殼則是中央星噴射出的物質的冷凝物。 -
Specifically, to a test particle, its mass defect is am = m _ ( 0 ) - m, where mo and m are the mass of the particle when it is in the infinity and in the grav - itational field, respectively. to a spherical shell ( or a solid sphere ), its mass defect is am = m _ ( 0 ) - m, where mo is the total mass of the matter scattering in the infinity and m is the mass of the gravitational spherical shell ( or the gravitational sphere ) combined by the matter scattering in the infinity
具體來說，對于試驗粒子，當它由無窮遠處運動到引力場中某點時，其質量由m _ 0變為m ，發生的質量虧損為m = m _ 0 - m ；對于球殼或固體球，當組成球殼或固體球的這些物質分散在無窮遠處時，總質量為m _ 0 ，當這些分散在無窮遠處的物質結合成球殼或固體球時，其質量變為m ，發生的質量虧損為m = m _ 0 - m 。 -
In order to solve it radically, making power assembly of bj1036e2f1 light truck the research object and through dynamic simulation analysis of power assembly, this thesis obtains the distribution rules of forces of the bolts linking three shells mentioned above and the relation between forces of the bolts and rotate speed of engine. after finite element mode analysis of these three shells, inherent frequency and vibration model of shell of power assembly are gained, and thus its dynamic character is realized. based on computer simulation analysis, experimental model of power assembly is acquired by vibration test and strength test of shell of power assembly, and the relation of forces of the shell and rotate speed of engine and imbalanced mass of rotate components is studied
為了從根本上解決該問題，本論文以bj1036e2f1輕卡動力總成為研究對象，通過動力總成的動力學模擬分析，找出了三殼之間聯接螺栓受力的分佈規律和螺栓受力與發動機轉速的關系；通過三殼的有限元模態分析，得到了動力總成殼體的固有頻率與振型，從而了解了動力總成殼體的動態特性；在計算機模擬分析的基礎上，通過動力總成殼體的振動測試和強度測試，得出了動力總成的試驗模態，並研究了殼體受力與發動機轉速和旋轉部件不平衡質量的關系。 -
The main studies of this thesis have been focused on the mass transport phenomenon in the hollow fiber membrane contactor, including the development of the model of the gas diffusion through the microporous membrane, the analytical solution of the shell side mass transfer differential equation in an orderly packed parallel flow module, the calculation of the shell side flow distribution in a randomly packed module, the estimation of the influence of the random arrangement of the fibers on the shell side mass transfer, and the experiments of the absorption of co2 into water
膜接觸器是一種通過膜作為兩相之間的分離界面而實現相間傳質的雜化膜過程。本論文主要研究中空纖維膜接觸器的傳質行為，研究內容包括氣體通過微孔膜擴散模型的建立、中空纖維膜均勻分佈的平行流組件殼程傳質微分方程的解析求解、中空纖維膜不均勻分佈組件中流體分佈的數學計算、中空纖維膜不均勻分佈對殼程傳質影響的估算以及co _ 2氣體吸收實驗。 -
In this dissertation, the re - entry vehicle can be seen as a rigid body system composed of a shell of the vehicle and internal moving mass points, by applying the newton - euler ’ s method, the dynamical equation of mmcrv are derived and the control mechanism is analyzed according to the dynamical equations. several influence factors on the dynamical response of mmcrv is analyzed in detail
將殼體與內部活動質量體看成是一個剛體與質點系組成的多剛體系統，採用newton - euler建模方法完整地推導了變質心再入體的動力學方程，其結果顯示了內部活動質量體移動對再入體姿態的影響。 -
Consulting about foreign study, the research showed that the speed of firing can be improved by modifying the machanism of the automatic, and at the same time two problems must be solved, one is that more mechanisms should act at the same time to reduce the time of the whole actions of automatic mechanisms, the other is that the time of each mechanism ' s action should be reduced. the time can be reduced by several ways. the first one is to reduce the mass of mechanism, the second one is to increase the force applied on the mechanism and reduce the resistance, the third one is to shorten the working distance, the fourth one is to give abstention and cushion to mechanism before action ends. this thesis includes the following topics : discussion of the theory of the automatic and shell - swing design, establish the kinematic and dynamic models of the main structures in automatic and perform the corresponding mechanical analysis, set up a compendious cyclical diagram for the automatic ; the computer simulation to the navy gun ' s firing parts
由現有艦炮自動機循環圖可知，制約射速提高的幾個因素是：後座、復進佔用的時間較長，約占總循環時間的三分之一；供彈機的動作單獨佔用循環時間，且較長；輸彈機的輸彈時間較長；各機構動作重疊少；參考國內外的研究情況，本文提出了在採用改進完善現有自動機機構來提高射速時，必須考慮以下兩點： （ 1 ） 、力求在同一時間內能使更多的機構參與工作，並處理好各動作之間的銜接（即介面技術） ，以便縮短整個自動機的動作循環時間。 -
According to the theory of the finite element analysis, the matrix of mass, rigidity and damp in every part of shell structure have been fixed on ; at the same time, calculation has been done in dynamics and statics
利用有限元理論，分別確定了復合殼體結構中各部件的質量矩陣、剛度矩陣及阻尼矩陣，並對其進行了靜力學與動力學計算，結果證明內襯三維波紋鋼板復合殼體結構與普通混凝土殼體結構相比，其結構承載力有了較大的提高。 -
Compared with the numerical results presented by miyatake and iwashita, together with the experimental correlations in literatures, the results indicated that the model developed in this thesis was reasonable and it could be used in the description of the characterization of the shell side mass transfer
通過與miyatake和iwashita數值解結果、以及其它文獻中存在的關聯式的比較，說明本論文建立的傳質模型是合理的，可以用於描述平行流組件殼程的傳質問題。 -
Because of the large mass, after the hydrogen burning, the temperature and pressure of the core is high enough to trigger helium burning to carbon, and a hydrogen burning shell is developed around the core
由於大質量恆星的核心比一般恆星更熱和有更高的密度，當走至生命盡頭時，核心條件足以把氦繼續轉化為碳，同時在核心外圍形成一個氦殼。 -
6. recruitedbattery shell technology and would go on mass - producing. 7. the third generation double deform spindle connected pole press was improved and cutting design would prolong tool life. from 50000 times to 150000 times
7 .第三代雙曲軸連桿沖床改善及模板分割設計，以增加模具壽命從50 ， 000次到150 ， 000次。
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