pressure reduction valve是什么意思 pressure reduction valve怎么读
pressure reduction valve的相关资料
pressure reduction valve的用法和样例
- No relief valve is required where two pressure reducing valves are installed.
如果装上两个减压阀，就不需要安全阀。 - Look for any signs of leaking between the gun and the unloader valve.
检查一下水枪和减压阀是否有泄漏的迹象。
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