signaller
短語(yǔ)詞組
- pig signaller 清管器通過(guò)標(biāo)牌
- SHEARING SIGNALLER 剪斷銷信號(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