词汇	block strop
释义	block strop un.滑车环索
随便看	bottom deposits in river bottom detaching roller bottom diagram bottom diameter Bottom-diameter bottom diameter of thread bottom die bottom die base bottom die of box-beam bottom die of sand core bottom discard bottom discharge bottom-discharge bit bottom discharge bucket bottom discharge car bottom-discharge door bottom discharge dredger bottom-discharge hopper bottom discharge hopper car bottom discharge meat mixer bottom discharge opening bottom discharger bottom discharge skip bottom discharge valve bottom discharging