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1·A novel percussion drill relates to a percussion drill, in particular to the percussion drill with the function of measuring the hardness.

新型冲击钻涉及一种冲击钻，特别涉及一种具有硬度测量功能的冲击钻。

2·According to the structure and operating principle of the JSL-30 drill rig, a drill parameter tester was developed especially for percussion drill.

结合JSL - 30型钻机结构和工作原理，研制了适用于振动条件下的钻进参数检测系统。

3·And also the author introduces the characteristics and application benefits of the new chain-type percussion drilling, and analyzes the popularization and application prospect of the drill.

并介绍了新型链式冲击钻的特点及应用效益，进一步分析其推广应用的前景。

4·Guiding parts, mandrels, calibration rolls, knives, plate cutters, inserts for percussion drills, masonry drill tips, calibration bushes, drawing cheeks, shearing knives, inserts for golfer shoes.

导向部分、心轴、校准轧辊、刀片、倒盘、冲击钻机的衬垫、钻机钻头、校准衬套、拉模夹具、剪刀、高尔夫鞋的衬垫。

5·Using with rotation drilling and percussion -rotation drilling, drill efficiently.

采用回转或冲击回转钻进方法，钻进效率高。

6·In rock drilling process with percussion-rotary drill rotating drilling tool bears two toques: dynamic torque which drives drilling tool into rock mass, and resistance torque of rock mass.

前言：在冲击—回转式凿岩机向岩石钻进过程中，旋转中的钻具承受着两种力矩的作用：一是驱动其旋转的动力矩；二是被钻岩石阻止其旋转的阻力矩。

7·The tool box contains 48 pc tools with both percussion or electric drill for routine maintenance of biogas works. The box is made of aluminum.

本工具箱选用冲击，电钻两用钻，选配适合沼气日常维修的48件工具组合，采用铝合金箱配装。