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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:ZL201710722274.5

Number of Inventors:6

Service Invention or Not:no

Application Date:2018-02-13

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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