基本解釋n.放泄用小型旋塞(小龍頭;油門;手壓開關(guān))同根派生 petcock相關(guān)詞英漢例句The doctor shut off the petcock. 醫(yī)生關(guān)掉小活栓。bilge pump petcock 艙底泵小塞門The doctor shut off the petcock 醫(yī)生關(guān)掉小活栓。feed pump petcock 添水泵小型旋塞petcock更多例句