active time中文什么意思

有效时间

• active:    adj. 1.活动的，有活动力的；【 ...
• time:    n. 1.时，时间，时日，岁月。 2 ...
• active braking time:    有效制动时间

例句与用法

1. Adults will visit flowers , mating and find hostplant aristolochia kaempferi after eclosion . the active time of adults is from 9 : 00 a . m . to 18 : 00 p . m . ,
   雌蝶羽化后就近访花、交尾，寻找寄主植物马兜铃产卵、雌虫孕卵量为18 - 20粒；飞行缓慢，反应迟钝，相对容易捕捉。
2. 3 . passive and active time - domain demodulation schemes were demonstrated based on a fiber bragg grating used as a tunable filter controlled by a piezoelectric stack , which was driven by an electrical sine wave signal . the measured strain applied on the sensor axially could be judged by observing the interval of the output between notches within a driving period in time - domain
   利用匹配滤波技术，分别采用无源和有源方式，借助受pzt驱动的解调光栅，将待测应变信息变为时序负脉冲间隔的变化，利用常规的示波器观测同一扫描周期中两负脉冲在时域中间隔的变化来确定待测应变的变化。