矿心

文章还对砂岩铀矿床Ra-Rn平衡系数的确定方法进行了讨论，认为目前工作中采用矿心Ra分析结果与伽马测井Ra解释结果对比计算Ra-Rn平衡系数的方法，不够科学，也不尽合理。

Determination methods of Ra-Rn equilibrium coefficient for sandstone-type uranium ore deposits are also discussed .

提高岩矿心采取率和取心质量的新途径

New Approches for Raising Ore-core Recovery and Improving Coring Quality

圆柱体矿心体重测定的简便方法

A Simple Method for Measuring the Body Weight of a Cylindrical Core of Ore Body

提高岩金钻探岩矿心采取率和取心质量岩金矿山级差品位指标的探讨

On Improving the Recovery and Quality of Coring in Mountain Gold Drilling An Approch to the Grade Difference Index of Gold Mines

我国地质找矿取心（样）钻探设备现状及提高效能的分析研究

The Present Status of the Geological Mineral Exploration Coring ( Sampling ) Drilling Equipment in China and Analysis-Research of Increasing the Drilling Efficiency

为此，提出了在岩（矿）心或工程放射性伽玛顺检时铅套法和常规法结合使用的建议。

Therefore , it puts forward some suggestion about using together the lead-casing dating method and common lead dating method during detecting in sequence the radioactive gamma in rock and ore cores or engineering projects .

提高矿热炉极心圆功率密度和电极电流密度的探讨

Approach to increase power density of pitch circle and electrode current density for a electric smelting furnace

介绍了矿热炉极心圆功率密度的表示公式和电极载流能力的理论公式及经验公式，对提高极心圆功率密度和电极电流密度进行了探讨。

The express formula for power density of pitch circle and theoretic and empiric formula of electrode current earring capacity on electric smelting furnace are introduced . A approach to increase pitch circle power density and electrode current density are carried out .