延长管 meaning in English
exte ion tube
extension pipe
extension tube
Examples
- Removing the extension tube shortens the spacing to allow any binocular viewer to reach focus without a barlow lens
除去延长管缩短间隔让任何的用两眼的观众到达没有一个巴罗镜的焦点。 - The shortest possible tube length is 520 mm with the extension tube removed , while the standard tube length during visual observing is 845 mm
最短的可能长度用被移动的延长管是520毫米而标准的全长在目视观察期间是845毫米。