circular grating

• 圆光栅

circular grating的用法和样例：

例句

1. Formula is used to explain the factors affecting the measurement precision of score errors of the circular raster by photoelectric phase-comparing method for angle positioning.
   摘要用公式推导说明了影响光电定角比相法检测圆光栅刻划误差测量精度的因素，并用两台测量精度不同的仪器做了实验验证。