查询词典 persistent wave

The speeds of different kinds of stress waves(such as compressed stress wave and torsional stress wave) are unequal under coupled impact load. So the internal forces in structure are different between different areas, and the boundaries of these areas are changing with time.

在耦合冲击载荷作用下，注意到各种应力波(如轴向压缩应力波和扭转应力波)的波速不同，结构被分成若干区域，各区域的内力不同，且这些区域的边界随时间变化。

The road of Chinese people pursuing democratic politics is long , hardships and unusually totuous,countless knowledgeable people advancing wave upon wave on this road , sheding the last drop of one's blood,died in a brave way.

中国人民追求民主政治的道路漫长，艰辛而又是异常曲折，无数有识之士在这条道路上前赴后继，流血牺牲。

In the abnormally wet condition, Taiwan is under a clear upper-level deep trough that may be a part of a wave train of short waves or a sector of the trough of a long wave.

台湾偏湿时，上层大气若不是在一串流函数波列型式距平的负区内，便是在波长较长的长波槽区。

The ridge－loaded helical traveling wave tube is a new kind of high power millimeter wave device. The "hot" dispersion equation of this circuit loaded with an electronic beam is presented in this paper, and the Downhill method is used to solve the transcendental equation.

脊加载螺旋槽行波管是一类新型毫米波大功率器件，给出了此结构中引入电子注后的"热"色散方程，并利用"牛顿"下山法求解了此复系数超越方程。

In this paper, based on summarizing previous numerical studies on wave transformations, deriving an extended form of mild slope equation, which is taken as the governing equation. The equation simulates wave transformation in offshore area with finite difference.

本文在总结概述前人关于缓坡方程波浪数学模型的基础上，推导出一改进型缓坡方程，并以此为控制方程，采用有限差分方法，模拟近海海域的波浪变形。

Because the rate at which a wave loses its energy is inversely related to its wave length, tsunamis not only propagate at high speeds, they can also travel great, transoceanic distances with limited energy losses.

传播， 相当于700 多公里/小时，因为能量的消失速度与它的波长成反比？海啸不仅能高速传播，他们也能带着有限的能量损失中旅行大，越洋的距离。

With oblique incidence transversal wave, defect mode of transversal wave decreases with increase of incident angle.

得到当横波斜入射时，透射波中横波的缺陷模随着入射角的增大而减弱，横波向纵波的转型随着入射角的增大而增强。

The transverse wave in a thin layer and the surface transverse wave in a half-space do not have any analogies in the classical elasticity theory.

薄层横波及半空间表面横波在经典弹性理论中没有相似性。

There are two kinds of elastic waves in solids a compressional wave and a transverse wave.

在固体中有两类弹性波，一类是压缩波，另一类是横波。

It is shown that fracture anisotropy results in splitting of converted shear wave and brings wave in transverse component record.

这种转换横波的分裂和快渡偏振方向的定向性难以用各向同性和水平横向各向同性传播来模拟。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。