At the momentof 9:43 a.m., on Tuesday, June 23rd, 2020, at the Xichang Satellite Launch Center in Sichuan Province, the last satellite of the third generation network was sent into space.
2020年6月23日，周二早上9:43，第三代导航系统最后一颗卫星在西昌卫星发射中心发射升空。
2
If we have a solid cylinder, then the momentof inertia about this axis Q through the center of mass, which I've called Q, equals 1/2 MR squared.
假如有一个实心圆柱体，轴心的时间惯量,通过这个物质的中心，等于1/2，MR的平方。
3
We got three times the momentof inertia about the center.