wave constant

According to the requirements of high speed punching machining, a new drive manner for a stepping motor, which is run under high voltage constant phase current chopping wave and low voltage locking is put forward and designed.

根据高速冲压加工的要求，本文提出了一种新型的步进电机驱动方式&高压斩波恒流运行、低压锁定驱动，并设计研制了该驱动电路。

These wave functions correspond to states of constant energy E.

这些波函数对应于具有恒定能量E的态.

With dielectric constant distribution function of Fourier coefficients as a foundation, we calculated the arbitrary shape two-dimensional photonic crystals' bandgap structures by PWM ( Plane Wave Expansion Method).

有了介电常数分布函数的傅立叶展开系数做基础，用平面波展开法计算了任意形状二维介质光子晶体的带隙结构，求解带结构的主要方法是通过计算本征方程的特征根。

Experimental Study on Wave Impedance and Lame Constant of Reservoir Sandstones

储层砂岩波阻抗及拉梅常数实验研究

The Realizes of Single Chip Microcomputer Control Stepping Motor Chopping Wave Constant Current Division Driver

单片机控制的步进电动机斩波恒流细分驱动器的实现

The viscoelasticity of a medium makes seismic wave have a constant phase delay when upper-limit frequency of the data is not high.

在资料的上限频率不高时，介质的黏滞性将导致地震波发生一个常数的相位延迟。

In the far field, the wave impedance approaches a constant 377 ohm for any current distribution.

任何电流源之远场呈现定值的波阻抗.

Automatic voltage regulator for constant current charging three-phase full wave constant voltage rectifier

恒流充电用自动调压器三相全波恒压整流器

The attenuation factor of longitudinal wave was changing linearly, whereas the attenuation factor of the slow shear wave kept nearly constant with a low frequency on the exploration seismic band.

纵波的衰减系数在地震频带内基本上呈线性变化，而横波的衰减系数在地震频带内除低频外基本保持稳定。

Design of reactive type stepping motor chopping wave constant current division drive circuit

反应式步进电机斩波恒流细分驱动电路的设计

Three-phase full wave constant voltage rectifier a diamond is everlasting and can Be handed down from generation to generation.

三相全波恒压整流器钻石恒久远，世代相流传。

Therefore , we should continue to promote the economic long wave through constant technological and institutional innovation.

我们应继续以持续的技术创新和制度创新来推动我国经济长波的高位平稳运行.

Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.

假定两个扬声器都发射恒定频率的纯正弦声波.