GB/T 39484-2020/ISO 15114:2014 纤维增强塑料复合材料用校准端载荷分裂试验（C-ELS）和有效裂纹长度法测定单向增强材料的Ⅱ型断裂韧性
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更新时间 : 2023-12-12 14:32:58
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