diopter scale

If you are measuring high refractive indexes, you may also need to calibrate and adjust using traceable refractive standards1 to2 times a year.

如测量高的折光指数，则每年需要1－次使用可追踪的折光标准进行校准和检定。

Design of catadioptric infrared optical system for tank target tracking and recognition

折反式坦克目标跟踪识别红外光学系统设计

elbow refractor

折轴反光望远镜;折轴折射望远镜;曲折折光计

The world is marching toward brightness and progress. The road is tortuous, but the future is bright.

（2）世界正向着光明和进步的目标迈进。道路是曲折的，前途是光明的。

folding camera (with bellows)

光折合式照相机（带折箱）

Double silver-blue lavender star/ white fluted edge. Glossy, ruffled. Standard.

重瓣，洋紫蓝色镶白边，星型花。有光泽的叶面，皱折边。标准型。

GI(Grated Index)

渐变折射线(光纤)

The study of the refraction of light.

屈光学研究光的折射

Single burgundy sticktite/ white frilled edge. Medium green, pointed, glossy, hairy, scalloped/ red back. Standard.

单瓣不掉落的葡萄酒色花，白色折边。中绿色尖尾扇型叶，叶面光滑多毛，红色叶背。标准型。

stress-induced birefringent optical fiber

应力导致双折射光纤

birefringence fiber with stress rod

应力棒型双折射光纤

fast refractive infrared optical system

快速折射红外光学系统

tunable birefringent filter

可调谐双折射滤光器

The x ray show a fractured ankle.

X 光片显示足踝骨折。

graded index fibre

折射率渐变的光导纤维

graded-index optical fiber

渐变折射率光学纤维

step graded index lightguide

阶梯折射率剖面光波导

The X - ray shows a fractured ankle .

x光片显示足踝骨折。