locking arc

例句：

1. 1.The locking arc is a critical component of the safety system.
   锁定弧是安全系统的关键组成部分。
2. 2. The engineer used a locking arc to secure the bolts in place.
   工程师使用锁定弧将螺栓固定到位。
3. 3.The locking arc was designed to prevent accidental release of the bolts.
   锁定弧的设计旨在防止螺栓意外释放。