In 1997 at Black Rock Desert, Nevada, he drove Thrust SSC to become the first person to break the sound barrier in a car and set the existing land-speed record of 763mph.
1997年在内华达州黑岩沙漠,他驾驶“推进”号超音速车成为突破汽车音障的第一人,并创下目前时速763英里的地面速度记录。
Rock mass elastic wave velocity is the synthesized reflection of rock quality, rock mass structure, and rock mass existing environment.
岩体弹性波速度是组成岩体的岩石性质、岩体结构、赋存环境的综合反映。
Directing to the problems existing in goaf roadway in soft rock roadway, find out the optimum solvent and make goaf roadway technology all_round way spread.
针对沿空送巷在软岩地区存在的几个问题,提出解决措施,找到解决问题的最佳办法,使沿空送巷技术得到全面推广。
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