From operating point to height of ground 工作点距地面高度mm
Form operating point to height of ground 工作点距地面高度mm
The landing location differed from the designated location by less than 1 km 返回舱实际著陆地点距理论著陆点相差仅一公里。
The landing location differed from the designated location by less than 1 km 返回舱实际著陆地点距理论著陆点相差仅一公里。
In order to identify the complicated wave fields between wells , we conducted time - space curves equation derivation for several important waves 井间地震观测系统设计时,最重要的两个参数是观测点距和观测井段的选取。