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A new special graph. design language-GDL is presented.
本文介绍一种新型的专用图形设计语言gdl。
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Experiment effect prove that GDL-4 steel has better wear resistance.
实验结果表明，GDL-4钢具有优异的耐磨性。
youdao
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Experiment effect prove that GDL-4 steel has better wear resistance.
实验结果表明，GDL-4钢具有优异的耐磨性。
youdao