impulse trap脉动: pulsation; pulsing; pulse; r ...式: type; style排水: drain off water; drain away ...阻: block; hinder; impede; obstr ...汽阀: steam valve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:脉动式排水阻汽阀，即可在微信中查询翻译
