characteristic and origin 特征与成因
Assembly language origin and characteristic 汇编语言的由来及其特点
origin and characteristic 成因与特点
the origin and characteristic 渊源与特征
characteristic origin
特征的起源
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The characteristic, origin, and protective measure of common defect appearing on anodized aluminum alloys surface are briefly presented.
本文简述铝合金阳极氧化常见缺陷特征，成因和对策。
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