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一种脆性材料疲劳裂纹预制试验机

Type of Patent: Software copyright

State of Patent: Have authorized

Authorization number: ZL201811238580.2

Number of Inventors: 5

Service Invention or Not: no

Application Date: 2019-01-25

Pre One:
一种表面无凸起的复合材料夹层板的胶接连接结构及其制备方法

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