Patents
在破碎易塌孔岩体中安装和回收微震传感器的装置及方法
Release time:2021-09-14
Hits:
- Type of Patent:
- 国家发明专利
- Application Number:
- ZL201910033928.2
- Service Invention or Not:
- no
- Application Date:
- 2019-01-15
- Authorization Date:
- 2021-02-05
- First Author:
- Zhang Penghai
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