open loop的用法和樣例：
例句
- Each relay driver is an open - collector transistor with a suppression diode.
每一個中繼驅動器是一個集電極開環的三極管和一個穩壓二極管。 - And the experimental tests had been carried out to verify the established model as well as the dynamic characteristics under opening loop control.
并通過實驗，對所建立的動力學模型及開環控制下平臺的實際動態特性進行了驗證。
