In this paper, the curved surface equation of a combinative folded plate roof is established by means of the local inclined coordinate system and generalized functions-sign function and step function.
首先借助斜坐标系和阶跃函数 ,建立了组合折板屋盖结构的曲面方程 ,然后用非线性板壳理论和Navier’s方法对简支组合折板屋盖结构在外荷载和温度荷载作用下进行了非线性分析 。
folding camera (with bellows)
光折合式照相机（带折箱）
Experiment of a One-Dimensional Photonic Crystal of Photorefractive Including Positive-Negative Refractive Index
一维光折变光子晶体正负折射率的实验实现
Study on the Propagation and Control of the Beam in the Photorefractive Crystals;
光折变晶体中光束的传输与控制研究
A Study of Partially Coherent Solitons in Photorefractive Media
光折变介质中部分相干光孤子的研究
NUMERICAL SIMULATIONS OF SOLITARY WAVES IN PHOTOVOLTAIC-PHOTOREFRACTIVE CRYSTAL
光伏光折变晶体中孤立波的数值模拟
elbow refractor
折轴反光望远镜;折轴折射望远镜;曲折折光计
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
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。
X-rays showed the skull to be unfractured.
x光显示颅骨没有骨折。