Granulometry is the basis of the study of engineering geological characteristics of clay soil.
粘性土颗粒分析是研究粘性土工程地质特征和应用的基础。
Coal bed joints are a widespread structure in coal beds. They are important objective in study of shaft structure and also a very important engineering geological factor.
煤层节理在煤层中普遍发育，它不仅是矿井构造研究的重要内容，同时也是极其重要的工程地质因素。
High level has also been reached in many aspects including geological design of horizontal well, reservoir engineering study and management.
在水平井的地质设计、油藏工程研究和水平井的管理等方面均具有较高水平。
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