钻头使用寿命 meaning in English

bit life
drilling life of bit

Drilling life of bit
钻头使用寿命
A new type rod damping stabilizer for rotary drills ispresented . it can increase the service life of rotary bit by about 27 % and its own life is over ten thousand meters . as a result , good econom ic benefit can be obtained
介绍了牙轮钻机用的一种新型减振稳杆器，提高牙轮钻头使用寿命27 %左右，其本身使用寿命超万米，获得了良好的经济效益。