... 限外显微镜 ultramicroscope 超音波检验 ultra-sonic testing 低黏性矽砂;矽砂 unbonded silica sand ...
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The applications of wavelets analyses in the ultrasonic testing signal become a very promising development route.
小波分析在超声检测信号中的应用成为一个很有前途的发展方向。
参考来源 - 小波变换在航空构件超声检测信号分析与处理中的应用研究The research of the digital ultrasonic testing device has become inevitable trend in world.
超声检测的数字化已经成为超声检测仪器发展的必然趋势。
参考来源 - 便携式数字化超声波检测仪器的研究The sampls were collected by soft reclaim installation. The reclaim sampls damage properties were analyzed by macroscopical observation, microscopic analysis, ultrasonic testing and sieving classification.
采用软回收装置对冲击损伤试件进行了回收，并对回收试件进行了宏观观察、微观分析、声波测试、筛分分级。
参考来源 - 岩石冲击损伤特性的试验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
N the scanning of material with an ultrasonic beam, during which reflections from faults in the material can be detected: a powerful nondestructive test method 超声波检测 [engineering]
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