... hard valve 高真空电子管, 硬性电子管 head valve 头阀 顶置阀 heat control valve 热控制阀, 加热控制阀 ...
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convex head valve 凸形气门头
flat head valve 平头气门
cylinder head valve seat 缸盖气门座
cylinder head valve guide 缸盖气门导管
cylinder head valve clearance 缸盖气门间隙
cylinder head valve 缸盖气门
cylinder head valve spring guide 缸盖气门弹簧导管
valve head [车辆] 气门头 ; [机] 阀头
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