principal velocity 中文意思是什麼
principal velocity
解釋
仲度-
Principal conclusions were drawn as the following : the non compatibility of pressure or velocity of the gas on both sides of the contact surface is the cause of the formation of shock wave ; the heating effect of reflective shock wave to driving gas during charging or exhausting process is the internal mechanism of peak oscillating effect, and all the factors that influence the formation and the running of the shock wave will influence the peak oscillating frequency, cooling effect
主要結論如下：熱分離機內激波形成的原因是射氣瞬間接觸面兩側壓力和速度不相容；峰值振蕩效應的內在機制為反射激波對充氣階段的驅動氣或低溫排氣的加熱，凡是影響激波形成及運動的因素都將對峰值振蕩頻率、冷效應及熱效應產生影響；當充、排氣時間比為0 . 1763時，最佳射流激勵頻率出現在高階峰值振蕩頻率上。 -
According to the actual situation and performance requirements, how to impair the influence of the disturb torque and the uncertainty of the system object model and how to improve stabilization and tracking accuracy are the principal difficulties in this paper. to solve these problems, a method by using mutative - plus and high - order compensation is brought forward and design by adopting h mixed sensitivity method in the velocity loop, then the weighting function selection is discussed, and the concrete selection principles are given in details
根據本系統的實際工作情況和性能指標要求，通過分析指出，如何克服機（艦）載條件下干擾力矩的影響及系統對象模型的不確定性是本系統中提高穩定精度和跟蹤精度要重點解決的問題，針對這一問題，提出了在速率穩定環採用變增益的串聯高階校正設計控制器和利用h _混合靈敏度方法進行控制器設計的方法，詳細討論了加權函數選擇的問題。 -
For example, the quenching and quenching plus low tempered structure of 38crmoal are hard to be differentiated by velocity method and the principal frequency technique. it will be better if they are differentiated by the method of relative attenuation coefficient
38crmoal鋼的淬火與淬火+低溫回火組織，用聲速法和主頻率比較法都難以區分，最好的方法是比較功率譜譜峰特徵（幅度、數量、分佈） 。 -
Taking the results as boundary constraint and the velocity field of horizontal movement after transforming reference frame as the load of fem node, the velocity field of horizontal movement in the region is simulated, the principal strain rate field and maximal shear strain rate field are calculated, the variety characteristics of the two rate fields and relation between the variety characteristics and strong earthquake preparation are analyzed
將反演結果作為邊界約束並將變換參考框架后的水平速度場作為有限元節點載荷，模擬區域內部水平運動場並計算其主應變率場、最大剪應變率場，以分析這兩個時段中這兩種場的變化特徵及其與地震孕育之間的關系。 -
Some key technical problems about construction method, vehicle velocity and clearance of the tunnel scheme were discussed according to the geographical location, engineering geological conditions, request of the harbor entrance and shipping, localization of the tunnel and some principal technical criterions
根據泰州公路過江通道的地理位置、工程地質條件、港口航運要求、通道工程定位以及工程的主要技術標準等，對泰州公路過江隧道方案的隧道建設方法、隧道行車速度和建築限界等若干關鍵技術問題進行了分析論證。 -
In order to make a clear technical analysis on it, author sets out research work with it ’ s principal and derives basic formula which makes it clear why crehsm can performance ultra - low speed without velocity pause
從連續回轉伺服馬達的結構模型入手，分析了新型馬達可以實現轉速、流量和理論輸出扭矩的無脈動。針對馬達超低速的特性，作者提出了改善其性能的措施。
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