速闭阀quick: adj. 1.快,迅速的,急速的 (opp. slow) ...closing: n. 1.封闭,停闭;封闭口;【植物;植物学】郁闭。 2 ...hand -operated quick-closing stovalve: 手动速闭阀hand-operated quick-closing stovalve: 手动速闭阀self-closing stovalve: 自闭停止阀下载手机词典可随时随地查词查翻译