查询词典 square wave

Mechanical vibrations and mechanical wave as important knowledge in physics, it is not only the key content ...

机械振动和机械波是"复合概念"，本身包含着众多子概念，又把力学和运动学的诸多概念和知识综合应用于其中，同时在力学、电磁波、声学，甚至原子和量子理论中又都有着广泛的应用。

Sound is a mechanical disturbance of a wave nature that propagates through any elastic medium at a speed characteristic of that medium.

声音是一种自然波的机械振动，通过弹性介质传播，速度取决于由该介质的特性。

Laser shock peening is a non-traditional anti-fatigue manufactureing technology based on mechanical effect of laser shock wave.

激光喷丸强化是一种基于冲击波力效应的非传统抗疲劳制造技术，目前关于激光喷丸强化的研究大多集中在机制和实验上。

By a series of processing and analyzing the three-dimensional space various graphs and images of seismic wave, many mechanical parameters of rock and soil are computed.

通过对三维数据结构的一系列处理分析形成三维空间地震波的各种图形图像，最终计算岩土体多种力学参数，从而实现对隧道及地下工程前方地质情况的判译、预报。

Ultrasonic device was made from ultrasonic power by the ultrasonic transducer is converted to mechanical wave action on the screen surface.

超声波装置是由超声波电源通过换能器将超声波转换为机械波作用于筛网表面。

As a mechanical vibration wave with frequency in range of 0.0001 to 20Hz, infrasound is an important proportion of the noise in productive environments and living condition.

次声是频率范围在0.0001～20Hz的机械振动波，是生产噪声和公共噪声的重要组成部分。

Ultrasonic is a kind of mechanical wave that frequency is upper 20KHz. Ultrasonic may be generated by many ultrasonic transducers.

超声波是频率高于20KHz的机械波，它可由多种能量转换器转变而成。

There are two parts in this dissertation. In part one, the reaction scattering for the H〓 system is studied using three-dimensional quantum mechanical coupled channel distorted wave approximation.

本文分两部分：第一部分用三维量子力学耦合通道扭曲波方法研究了三氢系统的反应散射；第二部分提出了一种原子与双原子分子相互作用的。。。

With the treatment of silicone coupling on the surface of nano-Al2O3 particles and the action of mechanical decentralization and ultrasonic wave, the particles were dispersed in the matrix of epoxy resin.

采用对纳米颗粒表面进行硅烷偶联处理和机械分散与超声波振动分散相结合的方法，实现了氧化铝纳米粒子在环氧树脂中的分散。

Key words: sandstone; microcracks; wave velocity; mechanical properties

关键词］砂岩，微裂纹，超声波速度，力学性质

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。