... tube support plate ==> 管支承板,肋板 tube telescope ==> 管式望远镜 tube tester ==> 电子管测试仪,电子管试验器 ...
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single-tube telescope 单筒望远镜 ; 单筒千里镜
straight-tube telescope 直管式望远镜
telescope tube 伸缩套管
The invention is essentially applied to the telescope tubes with the length adjustable, such as the dust suction tube of a vacuum cleaner.
本发明主要用在吸尘 器中的吸尘管等各种长度可调节的伸缩管上。
youdao
After a friend sent him the dimensions and the basic layout two lenses in a forty-eight-inch tube he got to work, and within weeks had made his own telescope.
NEWYORKER: Moon Man
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