spark arrester

spark-arrester的词性：
n.（名词）

1. A device designed to keep sparks from escaping, as at a chimney opening.
火花消除器：用在烟口以防止火花外溅的设备

2. A device used to control electric sparking at a point where a circuit is made or broken.
火花控制器：用于控制电火花使电路接通或断开的设备