短語(yǔ)詞組短語(yǔ)pig signaller 清管器通過(guò)標(biāo)牌SHEARING SIGNALLER 剪斷銷(xiāo)信號(hào)裝置scraper signaller 清管器信號(hào)裝置signaller r 信號(hào)工single signaller 單動(dòng)信號(hào)機(jī)entering station signaller 進(jìn)站信號(hào)機(jī)Rigger and signaller 吊索 返回 signaller