蜗壳的备料工艺流程    英文回答：    The process of preparing the snail shell involves several steps to ensure its quality and suitability for various purposes. As a materials technician, I am re...

水泵英语专业术语1ertical multistage centrifugal pump with barrel casing  具有筒型泵壳的立式多级离心泵Sectional bell 钟型吸入口Lower sleeve bearing 下套筒轴承First stage snap ring 第一级卡圈Diffuser 扩压器First stage impeller retaining...

vertical multistage centrifugal pump with barrel casing 具有筒型泵壳的立式多级离心泵sectional bell 钟型吸入口lower sleeve bearing 下套筒轴承first stage snap ring 第一级卡圈diffuser 扩压器first stage impeller retaining collar第一级叶轮挡圈s...