The return capsule needs to be launched to the moon and return back to earth in the third stage of the Chinese lunar exp......

根据自锚式悬索桥主缆索夹抗滑试验，验证主缆与索夹之间的摩阻系数及紧揽后主缆的空隙率是否满足设计要求，并为索夹上单根螺栓拧紧力......