This binocular is of fixed-focus type and has to be used with eye-glasses by anybody with visual defects.
此款定焦式的望远镜没有个性化的目镜曲光镜调节。
2
The principle of photo fixed-focus apparatus, GDDJ - 1, the analysis of precision and the way to improve the precision of the apparatus are discussed.
本文介绍了GDDJ - 1光电定焦仪的工作原理，精度分析以及提高该仪器的精度办法。
3
When I describe CI to technologists that haven't used the practice yet, I tend to focus on one of its major benefits: a decrease in the time between when a defect is introduced and when it is fixed.