... 取心涡轮钻具 coring type turbodrill ; column turbodrill 可控涡轮钻具 steerable turbodrill 低速涡轮钻具 low speed turbodrill ...
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短语
低速大扭矩涡轮钻具
low speed high torque turbodrill
;
love-speed high-torque turbo-drill
低速高扭矩涡轮钻具
low-speed-high-torque turbodrill
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