To realize apple automatic grading completely, the method for classifying apple surface defect by digital image processing was researched.
为了实现苹果分级完全自动化，研究了苹果表面缺陷图像分类方法。
The revised"Grading Diagrams for Macrostructure and Defect of Structural Steels"(GB/T 1979-2001)is introduced briefly.
简要介绍了新修订的《结构钢低倍组织评级图》（GB/T 1979 2 0 0 1）国家标准。
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