compound turbo-drill 复式涡轮钻具

hydraulic load on turbo-drill 涡轮的水力载荷

short turbo-drill 短涡轮

optimum capacity of turbo-drill 涡轮钻具最优排量

optimum revolution of turbo-drill 涡轮钻具合理转速

hydraulic efficiency of turbo-drill 涡轮的水力效率

love-speed high-torque turbo-drill 低速大扭矩涡轮钻具

unstable working range turbo-drill 涡轮不稳定工作区

optimized working zone of turbo-drill 涡轮钻具最优工作区