When all elemental equations can be described by a set of constant parameter values, as in the familiar RLC circuit, the system is said to be stationary or time-invariant or constant coefficient.
当所有基础方程都能用一组定常参数值来描述，正如熟知的RLC电路的情况，就称该系统是稳态的，或时不变的，或常系数的。
Afterward, researches have been done into the precision of the whole measuring system from the joint variable and constant parameter of the robot and the influence of the temperature.
随后从测量机器人的关节变量、常值参数和温度影响等方面对整个测量系统的精度进行研究。
To design and manufacture a constant-source with adjustable amplitude value and the test system, and to realize the examination of zener diode voltage drift parameter, is very important.
设计制作出一个幅值可调的恒流源及其测试系统，实现稳压二极管电压漂移参数的检测，至关重要。
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