词汇	壳筒
释义	壳筒 thimble
随便看	poppet nozzle poppet pressure poppet relief valve poppet ribband poppets poppet stock poppet type device poppet type extraction valve poppet-type extraction valve poppet type safety valve poppet valve poppet-valve poppet valve distribution poppet-valve engine poppet valve gear poppet valve governing poppet valve indicator poppet-valve indicator poppet valve operating unit poppet valves poppet valve steam engine poppet valve type Poppi poppied poppier