标题 |
Unobstructed all-reflecting telescopes of the schiefspiegler type
schiefspiegler型无障碍全反射望远镜
|
网址 |
求助人暂未提供
|
DOI |
暂未提供,该求助的时间将会延长,查看原因?
|
其它 | [32] Michael B. Unobstructed all-reflecting telescopes of the schiefspiegler type[P].United States Patent, 5142417, 1992-08-25 |
求助人 | |
下载 | 暂无链接,等待应助者上传 |