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介绍了摩托车链条钢的试验室试验研究过程。
The paper introduces the experiment and research courses of motor chain steel.
youdao
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金属试验室为国家一级试验室。
Metal laboratory at the national level for the laboratory.
youdao
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金属试验室为国家一级试验室。
Metal laboratory at the national level for the laboratory.
youdao