percussive drilling
导读：percussive drilling读音音标
[pə:ˈkʌsiv ˈdriliŋ]
percussive drilling意思解释
释义冲击钻探；
[pə:ˈkʌsiv ˈdriliŋ]
percussive drilling意思解释
释义冲击钻探；
percussive drilling读音音标
[pə:ˈkʌsiv ˈdriliŋ]
percussive drilling意思解释
释义
冲击钻探；
[pə:ˈkʌsiv ˈdriliŋ]
释义
冲击钻探；
