适用于埋设不同深度孔隙水压力计的钻孔防塌装置

Release time:2019-04-15|Hits:

Affilication of Author(s):土建与水利学院

Patent Applicant:yaozhanyong

Type of Patent:实用新型

Application Number:201220015976.2

Number of Inventors:1

Service Invention or Not:no

Application Date:2012-01-13

Publication Date:2012-09-05

Authorization Date:2012-09-05