常見例句雙語例句Introduced to plan an oil sump and sewer in the tanks and to design a sewerage system and recovery system of oils in the bulking area.介紹了設(shè)置集油坑排污管及庫區(qū)溝網(wǎng)排水回收油脂系統(tǒng)的原理、方法、效果。 返回 sewer system plan