对动圈式恒速度型过阻尼地震检波器相对阻尼系数的测量方法进行了研究。
It was devoted to the relative damping measurement for overdamped geophone with a moving coil of constant velocity.
对绞车的工作特性进行分析，采用大林算法，设计了一种恒速度数字控制器，给出了控制模型和数学公式。
Analyzing the characteristic of the hoist, a kind of digital controller of constant speed is designed using Dahlin arithmetic, the model and formulas are presented.
ACS 5000变速驱动系统使得波音公司可以根据每个测试的规程和参数，自由设定可调速度模式或者恒速模式。
The ACS 5000 variable speed drive system enables Boeing to run the fan in adjustable speed mode or at constant speed, depending on the protocols and parameters of each test.
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