中文

一种测量材料中纵波衰减系数与频率关系的水浸超声方法

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  • Release time:2021-09-26

  • Type of Patent:Invent

  • State of Patent:Pending patent

  • Application Number:CN201911077021.2

  • Service Invention or Not:no

  • Application Date:2019-11-06


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