deceleration idle

• 减低怠速

deceleration idle的用法和样例：

例句

1. Idle is rough, and high-speed miss and power loss may result.
   导致怠速不稳，高速缺火和功率下降。
2. The idle system supplies a very rich mixture to start with.
   怠速系统提供很浓的可燃混合气供起动使用。