相关51A的文学知识

1、TEST51ACONTINUEDFROMTHEPREVIOUSPAGE.2、MoreX-51Aflightsareexpectedasearlyasthisfall.3、TheX-51Aburnedformorethan200secondsandacceleratedthecrafttofivetimesthespeedofsound.4、X-51A起动超过200秒，促使...