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GB/T 35825-2018 The method of tea classification by chemical analysis 茶叶化学分类方法 - 中英文版 |
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GB/T 20654-2006 Protective clothing - Mechanical properties - Test method for the determination of the resistance to puncture and dynamic tearing of materials 防护服装 机械性能 材料抗刺穿及动态撕裂性的试验方法 - 中英文版 |
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