vl valve 阀门 VSLO valve stem leakoff 阀杆漏泄 YV wye valve Y形阀，斜杆直流式阀 AAE Acrylic acid ethylene 丙烯酸乙炔 ABRA abrasive 研磨料 ACM asbestes covered metal 包石棉金属 Al aluminum 铝 AlB aluminium bronze 铝青铜 ALBC aluminium bronze casting 铝青铜铸件。

阀门用英语怎么说呢valve 名词阀门，阀键 例句1This valve regulates the flow of water这个阀门调节水流2The pump sucks air out through the valve气泵通过阀门把空气抽出去3A valve immediately shuts off the gas when the lid is closed当盖子合上时，立刻会有一个阀门切断。

你所说的Internal parts Disc seat和Trim是一个意思，都是指阀体和阀盖里面所包含的部件。