设计制作了一种用形状记忆合金驱动的周期可变光栅。
A period-variable grating actuated by a shape memory alloy (SMA) is designed and fabricated.
这个表达式适用于任意形状的油膜位相光栅。
This expression is suitable for oil fi-lm phase grating with arbitrary form.
矢量图形格式不像光栅图形那样把颜色赋予像素，而是用线段活几何形状描述图像。
Instead of assigning colors to pixels as we do in raster graphics, a vector-graphics format describe an image in terms of lines and geometric shapes.
利用光学衍射原理，研制成了光纤光栅衍射屏，并与计算机神经网络相结合，开发了一种识别立体形状的视觉系统。
An optic fiber grating diffraction screen is developed by use of optical diffraction. Combining with computer neural network, a vision system for recognizing stereo shape is developed.
当非均匀应变场作用在光纤布拉格光栅（FBG）上时，由于FBG周期和有效折射率在沿FBG长度方向都为变量，所以会导致光谱形状的变化。
The spectrum of fiber Bragg grating(FBG) in inhomogeneous strain fields is distorted due to its inhomogeneity of both the periods and the effective refractive index.
本实用新型的特征是由形状记忆合金弯管、光纤光栅、带槽铜片以及铜基片构成。
The utility model has characteristics in that the sensor includes a shape memory alloy elbow, the fiber grating, a copper plate with groove and a copper base plate.
通过比较得出一组最佳的品质因数调节参数，并用于对光栅耦合系数高斯分布形状和耦合长度进行优化，最终获得了最佳的色散特性。
With this quality factor, the grating structure is optimized by selecting different coupling lengths and the distribution of coupling coefficient to improve its dispersion property.
检查几何形状和光栅的一致性，如果有必要用电子生成网格的装置。
Checking geometry and the congruency of raster, by means of an electronically generated grid, if necessary.
系统介绍了两种投影光栅三维形状测量技术的原理、方法、硬件和软件，并介绍了在船用柴油机设计中的应用。
Two projecting grating 3-D shape measuring methods are developed, which have advantage of easy practicing, non-contacting and getting whole fields information and easy to realize.
系统介绍了两种投影光栅三维形状测量技术的原理、方法、硬件和软件，并介绍了在船用柴油机设计中的应用。
Two projecting grating 3-D shape measuring methods are developed, which have advantage of easy practicing, non-contacting and getting whole fields information and easy to realize.
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