<正>It was reported that at the end of July a 120t LOX/kerosene Rocket Engine had completed a ground firing test after being put into storage for 5 years.The wh
With rapid development of infrastructures like tunnels and open excavations in Shanghai,investigations on deeper soils have become critically important.Most of
At 18:37 on June 16,the Shenzhou 9 manned spaceship, with its crew of three, was launched into orbit on top of an upgraded LM-2F rocket from the Jiuquan Satelli