201922769-一种简易的钻进深度、速度和角度可时测钻机结构及方法
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Title:201922769-一种简易的钻进深度、速度和角度可时测钻机结构及方法
Institution:岩土与结构工程研究中心
Type of Patent:发明
Number of Inventors:3
Service Invention or Not:No
Release Time:2019-09-12
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