sealed spark gap

例句：

1. 1. Thesealed spark gap is crucial for the operationof the electric motor.
   密封火花间隙对于电动机的运行至关重要。
2. 2. The engineer carefully inspectedthe sealed spark gap to ensure its properfunctioning.
   工程师仔细检查了密封火花间隙，以确保其正常工作。
3. 3. The sealedspark gap was used inthe electrical circuit to prevent shortcircuits.
   在电路中，密封火花间隙被用来防止短路。