water cooled stopper

例句：

1. 1. The water cooled stopper in the engine compartment helpsto keep the engine cool during operation.
   发动机舱内的水冷式止回阀有助于在运行过程中保持发动机冷却。
2. 2. The engineerreplaced the water cooled stopper witha new one to prevent any further leakage.
   工程师用一个新的水冷式止回阀替换了旧的，以防止任何进一步的泄漏。
3. 3. During maintenance, the techniciancarefully inspected the water cooled stopper for signs of wear and tear.
   在维护期间，技术员仔细检查了水冷式止回阀是否有磨损的迹象。