butterfly cock 中文意思是什麼
butterfly cock
解釋
蝶形旋閥-
Gate valve, ball valve, butterfly valve, needle valve and cock valve. cast iron valve, cast steel valve, and stainless steel valve etc
閥門鑄鐵、鑄鋼、不銹鋼等系列閘閥、球閥、蝶閥、針閥、旋塞閥 -
418 this is a gate valve ( check valve, butterfly valve, cut - off valve, magnetic valve, remote valve, relief valve, throttle valve, cock )
這是一個閘閥(止回閥、蝶閥、切斷閥、電磁閥、遙控閥、安全閥、節流閥、旋塞) 。
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