relative aperture meaning in English
口径比
相对孔径，相对口径
Examples
- Optical system design for lens with relative aperture of 11
相对孔径为11镜头的光学系统设计 - Aspheric mirrors and condensers in various diameters and relative apertures
各种不同口径及相对孔径的非球面镜及非球面聚光镜。 - Photographic lenses - methods for the measurement of the effective aperture , f - number and relative aperture
摄影镜头.有效孔径光圈数和相对孔径的测量方法 - The relative aperture 1 : 2 is the limitation of the manufacturing and testing of aspherical surface by using traditional method
相对孔径1 ： 2已是传统非球面加工和检验的极限。 - However , with the increasing of the relative aperture , it presents a austere challenge for manufacturing and testing technology
但是，随着相对孔径的增大，对加工技术和检验都提出了严峻的挑战。