Based on a certain types minecharacteristic, the trajectory wanton the all of shootings in detail is studied.
结合某型号布雷弹的特点，详细地研究了弹道任意一点处的射击诸元。
2
The paper presents main characteristic of a microchip PIC and its application in mine hoister safety protection .
介绍了微型单片计算机的主要特点极其在矿井提升机安全保护中的应用。
3
Based on the measured results of the displacement of deep soft rock roadway in MaLuPing mine, the deformation characteristic of the surrounding rock is analyzed.