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Timber structures-Strength graded structural timber with rectangular cross section-Part 2: Machine grading;
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;
youdao
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Timber structures-Strength graded structural timber with rectangular cross section-Part 2: Machine grading;
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;
youdao