积木式组合涡轮钻具
cordwood-type compound turbodrill
废气涡轮复合系统
exhaust turbo compound system
复式涡轮钻具
double-section turbodrill
三节复式涡轮钻具
triple-section turbodrill
蒸汽与燃气涡轮复合推进装置
combined steam-gas turbine propulsion plant
combined steam-gas turbine plant
单节式涡轮钻具
single section turbodrill
低速大扭矩涡轮钻具
low speed high torque turbodrill
低速高扭矩涡轮钻具
low-speed-high-torque turbodrill
多级涡轮钻具
sectional turbodrill
bended multiple turbodrill
三段式多级主轴涡轮钻具
triple-section multistage spindle turbodrill