脈沖地震法 的英文怎麼說
中文拼音 [màichōngdezhènfǎ]
脈沖地震法
英文
seismic impulse method-
Several key techniques of carving and milling machine cnc system are deeply studied they include : the transformation, data rebuild and interface design of huge volume nc program produced by cam ; the algorithm of cubic parametric spline pre _ interpolation and high speed real time interpolation in the cnc system, which. will gain a much higher surface precision and cutting speed ; methodology and algorithm of movement velocity acceleration control on a real time forecast _ and _ prejudge basis is designed. therefore, a smooth movement is insured. the shake and noise problem caused by non _ uniform pules for driving stepping or servo motor is solved by an improving algorithm to generate uniform pules
同時，本文對基於統一的pc平臺的雕銑機數控系統中的幾項關鍵技術進行了深入的研究，包括： cam生成加工程序的傳送、接收、讀取及其加工鏈表的生成和實時重構；對cam生成的離散數據進行三次參數樣條插值和基於累加弦長的三次參數樣條插補控制，保證加工工件表面的精度和光順性；設計具有「前瞻」功能的自動升降速控制方法，保證加工過程的平穩性；通過脈沖均勻化，有效地解決加工過程中因為脈沖不均勻而引起的震動問題。At the present time earthquake forecast focus on various phenomena of earthquake such as seismic - electricity, geo - stress, electromagnetic wave, etc. earthquake forecast based on anomalous infrasound is one of important methods because of the good corresponding relationship between the anomalous infrasound and earthquake
短臨地震預報是世界性難題，由於對地震機理知之甚少，所以目前的地震預報著重於研究與地震有關的各種現象，諸如地應力、地電脈沖、電磁波、測震等等。由於次聲波異常與大地震有很好的對應關系，所以它是重要的臨震預報方法之一。With a simplified homogeneous dam body - basement model, during the ground pulse motion, the dams " dynamic responses are analyzed separately with established program and decoupled solution in which explicit finite - element movation solution is combined with multi - transmitting formula
本文利用簡化均質壩體?壩基體系模型，用已有程序及波動顯式有限元結合多次透射公式的解耦演算法計算了在脈沖地震動作用下該壩體模型的動力反應。
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