基本解释轴承座套盖英汉例句双语例句The main parts of pump are pump casing, pump cover, impeller, shaft, sealing ring, shaft sleeve, bearing and shaft seal etc.泵主要由泵体、泵盖、叶轮、轴、密封环、轴套、轴承、轴封等零件组成。cstegzb.web.3150vip.cn