idle rotation

• 空转

idle rotation的用法和样例：

例句

1. Attained at specified torque, the clutch is released automatically and idly rotated, therefore this action prevents excessively tightening.
   若达到特定之扭力时，离合器会自动解除并呈空转状态，因为有此装置故可避免扭力过紧。