例句與造句

1. Pulse repetition period
   脈沖重復(fù)周期
2. Active underwater acoustic positioning / tracking systems locate target by measuring the range from object to receiving sensors . usually the target - receiver range can be got by the propagating time of a signal pulse . if this propagating time is larger than the pulse repetition period , it will mean that more than one signal pulse are on propagation
   主動水聲跟蹤定位系統(tǒng)通過測量脈沖信號的傳播時延可以測得目標(biāo)相對接收機(jī)的距離，當(dāng)此傳播時延大于系統(tǒng)同步周期時，時延測量就會呈現(xiàn)不確定性，可能相差若干個重復(fù)周期，導(dǎo)致定位解多值，稱之距離模糊現(xiàn)象。
3. It's difficult to find pulse repetition period in a sentence. 用pulse repetition period造句挺難的