表示上过了~
1、当时祖国很贫穷没设备、没资金
2、他们把钱学森禁起来,然后派人看住他,不然他 回国 经 过周恩来的努力,他才回来、
http://zhidao.baidu.com/question/200427456.html?si=1
很抱歉啊,我已经上初一了,而且学习的也不是苏教版的课程。不过,我找来了一个网址,里面有不少可以参考的答案。希望可以帮到你!
空气动力学教授 2009年去世
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