gravity schemegravity water supply system重力: gravity; force of gravity; g ...水: water供给: supply; provide; furnish; fe ...系统: system海水供给系统: sea water service pump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:重力水供给系统，即可在微信中查询翻译
