mechanical zero 中文意思是什麼

mechanical zero 解釋
機械零點
  • mechanical : adj 1 機械的；機械制的。2 機械學的，力學的；物理上的（opp chemical）。3 機工的，技工的；自動的；...
  • zero : n （pl zeros zeroes）1 【數學】零；零號。2 零位；零點，起點；（溫度表的）零度，冰點；座標原點；無...
  1. Princeton professor of mechanical and aerospace engineering fred dryer heads research to discover alternative fuels with near - zero pollution for the aviation industry

    普林斯頓大學機械航太系教授德瑞爾，為航天工業研發幾近零污染的替代燃料。
  2. Using newton mechanics method discussion about conservation condition of mechanical energy, we get the conservation under zero rotation and implict time in potential formula

    摘要本文用牛頓力學方法分析了機械能守恆的條件，指出只有力滿足旋度（方程式略）的條件，而且在勢能的表達式中不顯含時間，機械能才守恆。
  3. In the special case in which w'is zero, the mechanical energy remains constant or is conserved.

    在W』等於零的特殊情況下，機械能保持不變或稱保守。
  4. Mechanical zero uxter

    機械零位調節器
  5. We should stand a higher level and take deeper consideration about some disturbs or some uncertain factors in situation of higher precision and tinier process. otherwise, zero mechanical gearing has nonsense

    在要求高精度微進給的場合，必須站在更高的層次上，考慮更多的攝動與擾動等不確定因素對進給運動的影響，否則，零傳動將失去原來所希望的意義。
  6. The chip jk3ce that is one of micro - controllers in motorola 68hc08 family is used as control unit in this system. the zero crossing point of the back emf can be obtained by comparing the terminal voltage with the virtual neutral point, then using the software of the system can figure out the commutation period. the electronic commutation replaces the mechanical commutation in this way

    本系統採用的控制晶元為motorola系列單片機中的jk3ce ，反電勢過零點可以通過比較電機端電壓和虛擬中點電壓來得到，將過零點信號送往單片機捕捉埠後由系統軟體來確定換相時刻，這樣就可以由電子換向裝置替代機械換相裝置，有利於提高系統運行的可靠性，並降低了系統維護的費用。
  7. An experimental investigation of the sealing characteristics of a zero pressure, zero leakage lubricated spiral groove mechanical seal

    液體潤滑螺旋槽機械密封性能的實驗研究
  8. Especially, with the requirement of the digital controlled machine tools increasing, the hyper speed, the hyper precision, the hyper reactivity, what is called zero mechanical gearing control theory, are easy to put in practice for the linear motor ' s servo system

    特別是隨著數控機床加工技術要求不斷地實現高速和超高速化、精密和超精度化，高速反應能力地直線伺服進給技術一所謂地零傳動方式便應用而生。
  9. And then, a state equation is set up by the relationship among the input and output characteristic vectors as well as the state matrices ( sms ). the non - zero element in the sms characteristic is taken according to taylor series expansion, which is a transfer function of the basic mechanical unit

    再次，闡述了狀態變換矩陣的形成過程，通過泰勒級數展開，提取其非零元素的特徵，並按照傳遞特徵值對基本變換單元加以分類，歸納了狀態變換矩陣的性質。
  10. The use of wave packet to analyze the dynamics of quantum mechanical systems is an increasingly important method to the study of the classical - quantum correspondence. using the quantum gaussian wave packet analysis method, we calculate the autocorrelation function of the rectangular billiard, the peak positions of the autocorrelation function match well with the periods of the classical periodic orbits, which show that the period of the classical orbits can be produced by the time - dependent quantum wave packet method. we also discuss wave packet revivals and fractional revivals in the rectangular billiard, the results show that there are exact revival for all wave packet at each revival time. we find additional cases of exact revivals with short revival times for zero - momentum wave packets initially located at special symmetry point inside the billiard

    利用波包分析量子力學體系的動力學行為在研究經典和量子的對應關系方面越來越成為一個非常重要的方法.利用高斯波包分析方法，我們計算了矩形彈子球體系的自關聯函數，自關聯函數的峰和經典周期軌道的周期符合的很好，這表明經典周期軌道的周期可以通過含時的量子波包方法產生.我們還討論了矩形彈子球的波包回歸和波包的部分回歸，計算結果表明在每一個回歸時間，波包出現精確的回歸.對于動量為零的波包，初始位置在彈子球內部的特殊對稱點處，出現一些時間比較短的附加的回歸
  11. As a result, the concept of state space for conceptual design of mechanical system is presented, which is new to the literature, based on the set of all state vectors. meanwhile, the properties of state vectors, which are vectors addition, constant multiplying, reversible driving, zero vectors, are discussed in state space. secondly, the dual - vector is introduced to descript the essential relation among the input and output characteristic vectors as well as sms

    按照狀態空間中對偶特徵矢量的運算規則，在已知系統的輸入輸出特徵矢量的情況下，通過數學推導求解，將形成的系統狀態變換矩陣分解為多個狀態變換矩陣的乘積，再通過各狀態變換矩陣到數據庫中尋找相應的基本變換單元集合，然後進行按序組合，進而從理論上獲得相應的方案設計可行解。
  12. Abstract : cable - stayed is used to cable suspension, but cable force is calculated by manual, and only for less than 5 segments, and the prescion is poor. this paper puts forward “ zero moment method ”, which can not only calculate more segmental soupe force, but both temporary joint and fixed joint during construction. the mechanical concept is clear, and it is easy for calculating. it is fit for program, and the illustrations prove that the methods are right

    文摘:斜拉扣掛在纜索吊裝中經常運用，但扣索索力多採用手工計算，且多用於5段以內的吊裝，計算復雜，精度低.本文提出「零彎矩法」 ，可計算任意多段扣索索力，既可計算拱肋在施工過程中各節段臨時鉸接，又可計算各節段固結的情況，將兩種連接方式統一成一種計算方法，力學概念清楚，計算簡便，適宜程，文中最後用示例證實本方法的正確性
  13. Unique grating - sensory technology makes mechanical error close to zero. optimized optics design makes resolution reach the best level with the good linearity

    最優化超強的光學設計，使得光學解析度達到最佳，高值線性好。
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