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产品质量分等标准编制导则
Guideline for preparation of product quality grading standard
价格:¥0.00
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航空工业标准制定、更改和废止的程序和要求
价格:¥0.00
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民用航空油料质量调查程序
Exigent investigation procedure of aviation oil quality
价格:¥0.00
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农产品批发市场检测室技术规范
Technical specification for testing laboratory of agro-products wholesale market
价格:¥0.00
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