quenching systemrapid cooling system急: impatient; anxious冷: cold系统: system直接急冷系统: direct quench system; direct quencyh system急冷水系统: quench water system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:急冷系统,即可在微信中查询翻译