词汇	sump casing
释义	sump casing 沉砂管
随便看	mechanical picture of world mechanical pidgin translation mechanical pilar mechanical pile hammer mechanical pile press machine mechanical piler mechanical pilot mechanical pilot boist mechanical pipe mechanical pipe bender mechanical pipe joint mechanical pipe line mechanical pitch control mechanism mechanical pit cutter loader mechanical pit cutter-loader mechanical pitting mechanical place value transfer mechanical plant design mechanical planter mechanical plastering mechanical plasticization mechanical plastization mechanical plated wire mechanical plate making mechanical plating