circuit vent环路: loop; ring circuit contour; ...排气: exhaust; aerofluxus; air-out ...多通路排气阀: multiple discharge valve旁路排气挤塑机: by-pass vent extruder热气管路排气管路: hot gas line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:环路排气,即可在微信中查询翻译