基本解释[机械工程]立式流程泵英汉例句双语例句And the self-priming process of vertical multiple self-priming pump is analyzed.分析了立式多级自吸泵的自吸过程；vertical process pump更多例句词组短语短语vertical process pump coupling 立式流程泵联轴器vertical process pump更多词组专业释义机械工程立式流程泵