1. a gasket to seal a cylinder head. 
   一种密封汽缸盖顶的垫圈。
2. The cylinder head is heavily finned for strength. 
   汽缸头附有许多突片以增加强度。
3. having both inlet and exhaust valves located in the cylinder head. 
   在气缸盖上有出口和入口。
4. scaffold and hoist equipments 
   脚手架和垂直升降设备
5. a wrench for removing or tightening spark plugs into the cylinder head of an internal combustion engine. 
   用来移走或上紧内燃机汽缸盖上的火花塞的扳手。

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