一种适用模型试验的可视化微型隧洞掘进系统

Release time:2018-05-15|Hits:

Type of Patent:实用新型

Application Number:201220711770.3

Number of Inventors:1

Service Invention or Not:no

Application Date:2012-12-21

Publication Date:2013-06-05

Authorization Date:2012-12-21