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【多选题】
一阶单位系统单位阶跃响应的重要特点是:A.
响应曲线的斜率可以通过对t求导得到
B.
可以用时间常数T来度量系统输出量的值
C.
时间常数T越小系统响应越慢
D.
时间常数T越大系统响应越快
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