semi-metallic gasket

例句：

1. 1.The engineer used a semi-metallic gasket to seal the leaky valve.
   工程师使用一个半金属垫圈来密封漏气的阀门。
2. 2. The new car has a high-quality semi-metallic gasket that ensures smooth operation.
   这款新车装配了高品质的半金属垫圈，确保了顺畅运行。
3. 3.The technician replaced the worn-out semi-metallic gasket with a new one.
   技术人员用一个新的半金属垫圈替换了磨损的垫圈。