Murphy 's laws are especially applicable to rocketry !
墨菲的法律，尤其是适用于火箭！
They became a major subject of interestand the inspiration behind numerous films and booksfollowing the development of rocketry after world war ii .
在二战后火箭技术的发展下，它们成了人们感兴趣的一大主题也是数不清的电影和书籍背后的灵感来源。
Rocketry is a mature technology , and nasa has always relied on using contractors to build its rockets and spacecraft .
火箭技术已经相当成熟，一直以来nasa都是把火箭和航天器的建造交给承包商负责的。
Beijing - qian xuesen , a brilliant rocket scientist who single-handedly led china 's space and military rocketry efforts after he was drummed out of the united states during the red baiting of the mccarthy era , died on saturday in beijing . He was 98 .
In china , mr. qian was celebrated as the father of chinese rocketry , the leader of the research that produced the nation 's first ballistic missiles , its first satellite and the silkworm anti-ship missile .
