With the advantage of compact structure, stable motion and no blind rock drilling area, double triangle boom is used in rocking drilling robot.
双三角钻臂具有结构紧凑、运行平稳、凿岩无盲区等优点，被凿岩机器人所采用。
Drilling in gravel stratum is one of present difficulties in drilling area with low drilling speed, short service life of bit and high drilling cost.
卵砾石地层钻进是钻探的难题之一，不仅钻进速度低，钻头的使用寿命短，而且钻探成本高。
Drilling in gravel stratum is one of present difficulties in drilling area with low drilling speed, short service life of bit and high drilling cost.
卵砾石地层钻进是钻探的难题之一，不仅钻进速度低，钻头的使用寿命短，而且钻探成本高。
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