通过各种阶跃输入下的开环响应试验，对烘干过程的动态特性作了调研。
The dynamics of drying process is investigated by step change response in a open-loop.
方法用无感电阻网络分流器测量雷电冲击电流，并进行测量重复性、线性度试验和阶跃波响应试验。
Methods to measure the lightning surge current using a shunt with non-inductance resistors network. The experiments on the repetition, linear degree and the step response are carried out.
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