practical cascade

The practical method of realizing ultra low frequency ( ULF) vibration sensor by using magneto-electric velometer, which can make the lowest measurable frequency less than 0.5 Hz and keep the optimum damping remaining via cascade connection correcting circuit.

本文提出了利用磁电式速度计实现超低频振动传感器的实用方法&通过串联式校正电路，在保持最佳阻尼的同时，使可测最低频率降至0.5Hz以下。

Developed internal feedback chopper cascade speed control system has been used in practical industrial field, the whole series-wound timing system can operate successfully.

并在实际中调试了串级调速系统，整个串调系统能够顺利运行。

On the basis of expedient equation of three-dimensional electron-photon cascade shower development in emulsion chambers, a calculation has been made of the relation D-E-t among the spot darkness, shower energy and depth, Practical application procedures are summarized and discussed.

在简单的三维电子光子级联理论方程（乳胶室观测用）的基础上计算了在x光片上簇射黑斑黑度和能量的关系D E t，并介绍了应用的方法。

Cascade connected power electronics equipment is very common in practical applications.

系统级联是电力电子应用中最基本的形式。