precision drilling 精密钻孔
precision deep hole drilling tool 精密深孔钻孔工具
Precision drilling machine 精密钻床
laser precision drilling 激光精密打孔
precision deehole drilling tool 精密深孔钻孔工具
But the cost of drilling is high, and the electric or shallow seismic explorations are limited by layer media and have lower precision.
钻探成本高，浅震和电法都存在有层状介质的局限性及勘探精度的问题。
My company has lathe, instrument lathes, high-precision unmotivated Grinder, drilling and other machinery and equipment to meet customer demand.
我公司有车床，仪表车床，高精度无心磨床，钻床等机械设备以满足客户的需求。
This paper discussed the importance of precision drilling in high-yield cultivation technique of winter wheat.
本文分析了冬小麦精密播种在小麦高产栽培技术中的意义。
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