?辅助切换阀
... automatic-control servo valve自动控制伺服阀 auxiliary changeover valve辅助切换阀 auxiliary valve辅助阀(暖汽调整阀用) ...
?匡助切换阀
... back valve 回动阀, 止回阀, 逆止阀, 单向阀 auxiliary changeover valve 匡助切换阀 cq罗纹球阀 ...
?辅佐切换阀
... Manual changeover valve 手动切换阀块 auxiliary changeover valve 辅助切换阀 ; 匡助切换阀 ; 辅佐切换阀 ball changeover valve 球形转换阀 ...
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。