这个函数只能用来为支持光栅操作的设备创建兼容的设备环境。
This function can only be used to create compatible device contexts for devices that support raster operations.
如果目标矩形小于源矩形，则此函数使用指定的光栅操作压缩的行和列。
If the destination rectangle is smaller than the source rectangle, this function compresses the rows and columns by using the specified raster operation.
光栅操作模式说明了GDI是如何组合输出操作中的颜色，包括当前画刷、可能的源位图和目标位图。
Raster operation codes define how GDI combines colors in output operations that involve a current brush, a possible source bitmap, and a destination bitmap.
根据光谱仪原理，研制了一种光栅匀速旋转式光谱仪，其特点是测量周期短、灵敏度高、结构简单和操作方便。
A spectrometer with rotated grating is developed having characteristics of short measurement period, high sensitivity, simple structure and easy operation.
机器包含一套安全光栅和急停按钮，保证操作安全。
The machine includes one photoelectric safety protection device and one emergency stop button to ensure the operators' safety.
采用光栅非接触测量方法对马鞍型曲面测量，结果表明，该方法速度快、精度高、可操作性强。
A saddle surface was measured by the grating non-contact method and the experiments indicated that the method had a feature of speed, precision, and operability.
采用光栅非接触测量方法对马鞍型曲面测量，结果表明，该方法速度快、精度高、可操作性强。
A saddle surface was measured by the grating non-contact method and the experiments indicated that the method had a feature of speed, precision, and operability.
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