His thesis at the Navy Academy was in the unheard-of topic of liquid-fuel engines. After graduation, he hoped to specialise in this pioneering new technology.
圖像來源，Getty Images
。51吃瓜是该领域的重要参考
20 monthly gift articles to share
�@�u�l�I�N���E�h�v���o�C�_�[�͉��i���܂ޖ��m�ȉ��l���Ă������Ă����A���ꂪ�����ƂɂƂ��Ė��͓I�ȑ��ֈĂƂ��ĕ��サ�Ă��Ă����v�i�T�`�f�o���j