查询词典 instantaneous changes

According to theorem of motion of centre of mass and theorem of moment of momentum about centre of mass , we derive the theorem of moment of momentum about instantaneous center of rotation.

从质心运动定理和相对质心的动量矩定理出发，导出了相对瞬心的动量矩定理。

Through a flip-flop, monostable or amplifying circuit composed of a CMOS element, the electromotive force controls the on and off, the delaying or the instantaneous on and off of the load.

通过啪嗒啪嗒的响声，单稳态或放大的电路组成由CMOS元素，电动力控制断断续续，延迟或者断断续续瞬间装载。

Like a whirl of shiny flakes sparkling in a snow globe, Hubble catches an instantaneous glimpse of many hundreds of thousands of stars moving about in the globular cluster M13, one of the brightest and best-known globular clusters in the northern sky.

据国外媒体报道，美国宇航局哈勃太空望远镜拍到北部天空中最明亮最有名的球形星团M13，恰似一个天上"雪球"，里面有无数恒星在运动，如同连串的"雪片"在闪烁。

By measuring the instantaneous value of short-wave spectrum, we can get an important parameter of the local ionosphere, foF2, and then work out the MUF of the electrocircuit.

通过对测试结果进行统计分析可以得出：短波频谱的一阶矩ICF和电离层F2层临界频率f0F2具有很好的相关特性，通过测量短波频谱的瞬时值可以得到本地电离层的重要参量f0F2，进而可以计算出电路的最高可用频率。

The natural neutron flux measurement method can be used to predict the instantaneous change of atmosphere condition, and to determining the water content of soil and rocks and to predict earthquake.

通过对地－空界面天然中子流测量，可以揭示气象的瞬态变化、确定地表介质的含水率的关系，以及在地震预报与环境电离辐射评价方面具有重要的科学意义与实用价值。

These signals are instantaneous and nonperiodic, some of them have very high frequency.

这些信号是瞬变的非周期的单次脉冲信号，有的频率很高。

The NON-AS algorithm can be applied to receiver of multiple input and multiple output systems,and selection of receive antennas is based on the Frobenius-2 norm of instantaneous received signal vector.

NON-AS算法适用于多输入多输出系统的接收端，接收天线选择是基于每个天线瞬时接收到信号矢量的F-2范数。

The pair-wise error probability analysis and simulation results show that,under the condition of high SNR,by selecting the set of antennas that observe the largest instantaneous Frobenius-2 norm of received signal vector,the same diversity gain can be achieved as the one obtained by using all the receive antennas.

成对错误概率分析和仿真结果表明：在高信噪比情况下，选择有最大范数的接收天线，系统能实现和使用全部接收天线相同的分集增益。

The instantaneous availability of control system of nuclear warhead exploding is obtained by using highly efficient Monte Carlo method.

用本文设计的方法评估了该系统的可靠度和瞬态可用度。

Crack propagation problems under the influence of the edges of the crack subjected to homogenous loads, the origin of the coordinates subjected to concentrated increasing loads, the central zone of the edges of the crack subjected to homogenous loads, the certain point of the edges of the crack subjected to moving unit step loads, the origin of the coordinates subjected to moving increasing loads Px m, the edges of the crack subjected to instantaneous impulse loads, the edges of the crack subjected to moving concentrated variable loads, the origin of the coordinates subjected to point loads, the edges of the crack subjected to a constant moving concentrated loads and the origin of the coordinates subjected to instantaneously moving impulse loads are studied respectively, and the analytical solutions of dislocation distribution function have been obtained.

同时对裂纹面受均布载荷、坐标原点受集中增加载荷、裂纹面中心区受均布载荷、裂纹面上某点受运动阶跃载荷、坐标原点受运动增加载荷Px m、坐标原点受瞬时冲击载荷、裂纹面受运动集中变载荷、坐标原点受集中载荷、裂纹面受常数运动集中载荷、坐标原点受瞬时运动冲击载荷作用下的裂纹扩展问题分别进行了研究，获得了位错分布函数的解析解。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。