大家在查：矿井火灾水洗作用地层水矿化度地层水电阻率相对渗透率曲线绝对瓦斯涌出量钻井液固相褶皱槽回压凡尔扩眼器

矿井瓦斯等级

网络gas ranks of mine

矿井瓦斯等级

矿井瓦斯等级

矿井瓦斯等级

gas ranks of mine

... ) second category gassy mine 二级瓦斯矿 ) gas ranks of mine 矿井瓦斯等级 ) first category gassy mine 一级瓦斯煤矿 ...

2

Raise Mineral Well Gas Grade and Carbon Dioxides Gushes Study That Quantity Authenticates Credibility

提高矿井瓦斯等级与二氧化碳涌出量鉴定可靠性的探讨

3

Superficial View of Mine Methane Classification Assessment to the Guiding Significance of Methane Control

浅谈矿井瓦斯等级鉴定对瓦斯治理的指导意义

4

Inquiring into Evaluation Indexes of Mine Gas Classification

对矿井瓦斯等级鉴定指标的探讨

5

Discussion on Reasonableness of Mine Gas Class Division Standard

矿井瓦斯等级划分标准的合理性探讨

6

Study to delimit and express gas ranks of mine with gas effusing equivalent velocity

用瓦斯涌出当量速度划分矿井瓦斯等级的研究

7

Discussion on appraising method for grade of gas

浅议现行矿井瓦斯等级鉴定方法

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