常見例句雙語例句The utility model is a water grating board which is convenient to drain. The utility belongs to water grating used in municipal works and sewers of streets and dwelling communities.一種方便排水的水箅蓋，屬於市政工程、道路、生活小區(qū)內(nèi)等下水琯道上 使用的水箅蓋。ip.com 返回 drain grating