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acceleration
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     The Acceleration of Maotai
     茅台加速度
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     The Acceleration of Iterative process
     迭代过程的加速
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  acceleration
Based on the piezoresistive effect of the MOS RO, the accelerometer transduces the acceleration into frequency output.
      
As the accelerometer is based on the piezoresistive effect of the MOS RO, the frequency characteristics of the MOS RO and its relationship with the acceleration are described.
      
Enhancement of wave and acceleration of electron in plasma in the external field
      
This paper investigates the enhancement of Langmuir and ion-acoustic wave and the acceleration of the electron in collisionless plasma, in the presence of an external transverse field.
      
Furthermore, the formula for ponderomotive force and the expression that describes the electron acceleration were obtained.
      
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The structure of general circulation over the Asia, in the period of Jan. 1st. to Mar. 10th., 1956, is investigated using all available aerological material. It is found that:1.During thus period there existed two jet streams over the continent. This two jets combined into one jet at the meridian 140°E.2.Both jets over Eastern Asia are accelerated downstream. The southern one starts acceleration from the meridian 75°E, while the northern one was not acce 1e rated before reading Ere meridian 100°E.3.The...

The structure of general circulation over the Asia, in the period of Jan. 1st. to Mar. 10th., 1956, is investigated using all available aerological material. It is found that:1.During thus period there existed two jet streams over the continent. This two jets combined into one jet at the meridian 140°E.2.Both jets over Eastern Asia are accelerated downstream. The southern one starts acceleration from the meridian 75°E, while the northern one was not acce 1e rated before reading Ere meridian 100°E.3.The baroclinity of the atmosphere over Eastern Asia is mainly concentrated in the vicinity of the Tibetan Plateau.It is considered that the existence of the Tibetan Plateau has the following three effects on the general circulation:1.The existence of the plateau intensifies the baroclinity (along the N-S as well as W-E directions) around the plateau, south of which a vertical circulationis formed.2.The confluence of the two jets, thus also the acceleration of them, is due to the existence of the plateau.3.The existence of plateau makes the southern jet intensified and steady.

根据1956年1月到3月上旬亚洲地区高空资料,对亚洲大陆上空的大气环流进行了探讨。作者得出了下列的事实: 1)在上述时间期限内的平均情况表明,亚洲大陆上空存在着二支急流。这二支急流在东经140°经度上已经汇合。 2)二支急流在东亚部分都表现有向东加速的现象。南支急流自东经75°就开始明显地向东加速。而北支急流的加速自东经100°附近才开始。 3)东亚大陆上大气的斜压性主要是集中在高原的附近。 另外对上述现象也作了一些初步的研究。作者认为西藏高原的存在对大气环流有下列三方面的影响: 1)高原加强了大气的斜压性,并且在高原南方形成垂直环流。因而强烈的加速了南支急流。 2)高原的存在使得南北二支急流在其东侧互相接近,显然地影响了急流的加速。 3)高原保证了南支急流强大而且稳定,这就是说每天每年同季的变化都小。

In this paper, a survey is made over the existing theories of seismic forces onstructures. It is found that all the theories fall into one of the following cate-gories: 1) the so-called "statical theory" which considers the structure subject toan equivalent constant acceleration; 2) theories based upon simulated simplified ground motions; 3) theories based upon recorded actual ground motions; 4) theories based upon random impulses. Critical comments have been given to the above theories, especially to...

In this paper, a survey is made over the existing theories of seismic forces onstructures. It is found that all the theories fall into one of the following cate-gories: 1) the so-called "statical theory" which considers the structure subject toan equivalent constant acceleration; 2) theories based upon simulated simplified ground motions; 3) theories based upon recorded actual ground motions; 4) theories based upon random impulses. Critical comments have been given to the above theories, especially to thefourth one. The writer further gives a brief but cpmplete description of the responsespectra of the structure and on this basis, all the theories are co-related. Computations made by G. W. Housner for major American earthquakes dis-close that the acceleration spectra for damped system are flat curves withoutoutstanding peak value. For this reason, the writer deems that for certain typeof structures, variation of the acceleration spectral value for different modes of vibration will be small, and may be taken approximately as a constant. As aresult, the seismic forces reduce to this constant spectral acceleration times the.mass of the structure. It is suggested to use this method for estimatingthe base shear but make proper adjustment in its distribution along the height ofthe structure. It is also proposed to tie up this spectral acceleration to the earth-quake intensity scale. Finally, the writer stresses that further development of the theory of seismicforces on structures depends upon researches along following lings: 1) strong-motion program; 2) dynamical properties of structures and materials; 3) effectsof foundation conditions; 4) vertical and torsional seismic forces; 5) co-relationbetween seismic forces and earthquake intensity.

本文回顾了关于建筑物地震力的理论的发展过程,对于现行的几种理论进行了评论;认为在我国目前条件之下,可以采用一种基于动力原则的地震力系数;最后对今后的研究方向提供了一些意见。

In this paper is derived the exact equation of motion of ring-rail and then its approximate equation, as given in formula (3) and (4). Based on this equation, a graphical method of cam design is given, with its end corrections modifying the equation of motion at both ends of travel. An analysis of speed and acceleration of this motion is also given in this paper.

本文研究細紗机鋼领板的运动規律,首先根据圓锥面的卷繞要求得出準确的运动規律公式(3),再得出其近似規律公式(4),然后进一步研究卷绕凸輪的設計方法,分析钢领板的运动速度和加速度,最后得出凸輪尖端修正对升降运动規律的影响值。

 
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