Kèo nhà cái 5ͬĶƵʻԲͬСĶѪܲӰÿ23ÿ30ϵĶԼҪͷѪҺжӲҪʹҪظѪҺĴҪÿ45ÿ30ϵĶ˹ͷٸ߶ԽȫϵǹȫϵȡõĻչ˹ǿϣǿԽϵͬʱǿѾԮϰȫάƽĺ
֪ͨȷУַͨʽѵһУѵѧУͨķʽίʵĻѧУӾضѧӾѵڶУѵѧУͨķʽίʵĻУԴѧӾѵҳѵҳԴѧѵμѵҳøԴжѧӾѵ2013ӶŹŵһվһλɹǰ߹ŮƯô̸˫ȷϽ̹ͬûеĺֳͲݮȻ롰رƶȡڶ˹¿ʼͬûܻΪձ˶˹ǧȺĿơ
ڻٴβʵֳʰ뵺˻ļᶨ־˫Ϊʵְ뵺˻úƽƵĽ̲ӦжΪNASAˡܶȳټ(LDSD)֤üɡٳʽ;ͳٻɡ
ĻСշٱ˵뿪֮ʰζӳԼһ·ĸл֮ȫ£⼸Ὣ̨־֮ͬʱɴؾ̨ܾᲹνòӢĺ»籨˿·滮оij20163Ǿķһһ·սԵרҵ߶ǿȫЭ칫Ϊҵܵλɹҿ廪ѧ˿·йԽڴٽйʮ̳Ϸ