词汇	valve seater
释义	valve seater 阀座刀具
随便看	sedimentometry Sediment on alluvial flat sediment on the high floodplain sedimentophilous elements sediment origin Sediment or lime in tank sedimentormeter sedimentory facies Sedimento-tectonic evolution sedimentous Sediment outflow ratio sediment oxygen demand sediment pan sediment parameter sediment particle sediment particle cloud sediment particle morphology sediment particles sediment passing through turbines sediment P concentration sediment peak sediment percentage Sediment phosphorus sediment piled up sediment pollution