gravity culvert重力: gravity; force of gravity; g ...排水涵洞: discharge culvert排水涵洞: discharge culvert; drainage culvert重力排水: drainage by gravity; gravity drainage; gravitydrainage重力排水量: gravitational di lacement; gravitational displacement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:重力排水涵洞，即可在微信中查询翻译
