refraction GRE

Based on the double refraction principle of outgoing beam in the biprism,the displacement method for measuring the small angle of biprism is presented.The error of this method is also discussed.

利用双棱镜引起出光束方双偏的原理,提出一种位移法量玻璃双棱镜微小底角的新方法,介绍量的基本原理,讨量误差.

The article compares the difference of image check results between uncovered microcoria and bechterew on the basis of check—up and analysis of 518 patients who suffer from improper refraction.

本文对518例屈光不正患者加以检分析,比较不同遮盖时小瞳与散瞳检影的结果差别。

On the basis of the refraction principle of soluble solid, the content of the soluble saltless solid in soy sauce was determined by refractometry.

基于可溶性固形物的原理,用光计法定酱油中可溶性无盐固形物的含量,取得与重量法基本一致的结果。

The parallactic refraction between the stars and the satellite is small and well determinate, except for the irregular stellar movements known as erratics.

除通称为游动的不规律星体运动之外，恒星和卫星之间的视差光差微小，而且是容易定的。

The past rectification operation aiming at myopia refraction patients has developed the rectification treatment aiming at hyperopia and astigmia patients.

过去仅针对近视屈光患者施行的矫正手术，目前已发展出可针对远视与散光患者施行的矫正治疗。