将矢量图转换为光栅图也很简单，可反过来则不行。
It is also very easy to convert from vector to raster formats, but the same ease doesn't hold true vice-versa.
这种情形中最大的错误在于使用了光栅图而非矢量图。
The bigger mistake, in this case, is using raster rather than vector images.
矢量图无论放大多少都不会损失图片质量，而光栅图(或位图)一旦放大就会出现锯齿。
Vector images can be blown up to any size without loss of quality. Raster (or Bitmap) images become jagged when made larger.
本文研究了将TIFF/IT格式的光栅图象文件转换成PDF文件的方法。
The paper investigates a method to convert pages of the TIFF/IT format into those of the PDF format .
现有的交互式电子技术手册（IETM）解决方案主要有光栅图、电子文档化和数据库三种，它们既有独特之处，又有各自的局限性。
There are three current projects about the digitized technical manuals, including raster image, archives and database. Each of them has its characteristics and limitation.
可以用胶片、全息图和光栅作为滤波片。
实验中制作出了高衍射效率和信噪比的体积全息光栅和反射全息图。
The holographic volume gratings and reflection holograms having high diffraction efficiencies and signal noise ratio are also fabricated in experiment.
说明傅里叶频谱面的滤波处理及编码光栅的衍射效率对图象输出信噪比的影响。
This is mainly influenced by the filtering process in Fourier plane and the low diffraction efficiency of the encoding grating.
本文用有效光源法分析了正交光栅干涉仪的干涉图。
The interference pattern of a cross-grating interferometer is analyzed by the so-calledeffective source approach.
方法：用平面光栅摄谱仪拍摄未知样品之原子发射光谱图，并作定量分析。结果：测定营养品中微量元素的含量。
Methods:Use the Grating Spectrograph to take photograph of atomic emission spectrum of unknown sample and make quantitative analysis Results:Quantitative determination of trace elements in nutriment.
虚光栅移相莫尔条纹法是一种对静态干涉图的处理方法。
The virtual grating phase shifting moire fringe is a method to manipulate the static interferogram with carrier fringes.
置一位相光栅于相干光学处理系统频谱平面，利用其零级与一级衍射光的相干迭加实现图象相减。
With a phase grating located at Fourier frequency plane, optical image subtraction is obtained as a result of the coherent superposition of the zeroth and the first order of the diffracted light.
为了增强点阵光栅全息图的闪耀效果和获得奇妙的动态视觉效果，作者在实验中采用了两项特有的单元技术，即光斑整形和像元移位。
Two unique techniques, spot shaping and pixel shifting, are adopted for improving sparkling and kinetic visual effects of dot matrix hologram in our experiments.
为了增强点阵光栅全息图的闪耀效果和获得奇妙的动态视觉效果，作者在实验中采用了两项特有的单元技术，即光斑整形和像元移位。
Two unique techniques, spot shaping and pixel shifting, are adopted for improving sparkling and kinetic visual effects of dot matrix hologram in our experiments.
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