tunnelling with the pneumatic pick的意思|示意

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用气动镐挖隧道

pick housing of pneumatic pick 气动镐壳
internal pneumatic pick-up 内置气动拾取器
pneumatic pick mining 风镐落煤法
Honeywell Pneumatic Replace we are pirates, these data are stolen from youdao Parts 我们是盗版者，这些数据是从有道Parts偷来的
Parts of pneumatic hand tool 气动手工具零件
Pick-rods for pneumatic picks 气动镐用的镐杆
pneumatic pressure pile 气动压桩
pneumatic c pile hammer 气动c打桩锤
pneumatic pipeline pig 气动管道清管器
pneumatic container-pipeline 气动container-pipeline