... 宏观 宏观照相术 macrography 宏观照相,宏观摄影 pjtography ; macropjtography 低倍照相,宏观照相术 macrophoto ...
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The cause of fracture of a water supply valve used was analyzed by macrophoto, chemical composition analysis, metallography and mechanical performance.
针对使用中的自来水阀体断裂破坏,进行了宏观形貌、材质化学成分、金相组织、力学性能等失效分析工作。
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