分选系统是光电分选机的重要组成部分，它的任务是利用光电技术将物料中的次品分类检出并剔除。
As an important portion of the photoelectric sorter, sorting system is a way to sort and remove infested objects by using photoelectrical technology.
木结构 按强度分类的矩形截面承重木料 第2部分：机械分选；
Timber structures-Strength graded structural timber with rectangular cross section-Part 2: Machine grading;
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