A、以初始速度恒速上升,當(dāng)達(dá)到穩(wěn)態(tài)值時(shí)所用的時(shí)間就是時(shí)間常數(shù)T
B、以某時(shí)刻速度恒速上升,當(dāng)達(dá)到穩(wěn)態(tài)值時(shí)所用的時(shí)間就是時(shí)間常數(shù)T
C、當(dāng)Y(t)達(dá)到穩(wěn)定值的0.618處,所經(jīng)歷的時(shí)間其數(shù)值恰好為時(shí)間常數(shù)T
D、當(dāng)Y(t)達(dá)到穩(wěn)定值的0.632處,所經(jīng)歷的時(shí)間其數(shù)值恰好為時(shí)間常數(shù)T