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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