reversible circulation valve双: two; twin; both; dual循环: circulate; circle; round; re ...阀: established house or power g ...循环阀: circulating valve; circulation valve; recycle valve双循环: double circulation; double round-robin; dual cycle; dualcycle下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:双循环阀，即可在微信中查询翻译
