... traditional material testing(传统材料研究) advanced composite material testing(先进复合材料研究) fatigue testing(疲劳测试) ...
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As defects on composite material structure and composite material reinforced structure are inside, traditional testing method is hardly possible.
复合材料结构和复合材料加固结构的缺陷一般都是内部缺陷，传统的人工目测法很难检测。
In addition, traditional quality testing methods destroy samples, waste material and prolong production time, which cannot satisfy the need of engineering.
另外，传统质量检测的方法采用抽样破坏方法检测接头质量，既浪费材料，又延长生产周期，不能满足工程需要。
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