若矩形脉冲幅度为Vm,则其脉冲宽度tw是指从脉冲前沿到达________Vm起,到脉冲后沿到达________Vm为止的一段时间。A.0.1,0.9B.0.5,0.5C.0.7,0.7D.0.9,0.1
若矩形脉冲幅度为Vm,则其脉冲宽度tw是指从脉冲前沿到达________Vm起,到脉冲后沿到达________Vm为止的一段时间。
A.0.1,0.9
B.0.5,0.5
C.0.7,0.7
D.0.9,0.1
参考答案和解析
0.5 , 0.5
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