This paper describes the application of numerical analysis in gas emission prediction in virgin zone of a mine.

介绍了数字分析在矿井瓦斯涌出量预测中的应用。

youdao

ALL can provide 4 logs that have different investigation depth. They can be used to inverse invasion radius, invasion zone resistivity and virgin zone resistivity.

利用阵列侧向测井提供的4条探测深度不同的曲线，联合反演侵入半径、侵入带电阻率和原状地层电阻率，具有很好的效果。

youdao

Our Price, Tower Records, Virgin Megastores, Zavvi, MVC, Music Zone, Andy's, Border's and Woolworths are all well-known names that have disappeared from streets in recent years.

BBC: Virgin France files for bankruptcy

When you consider the departure of Our Price, Tower Records, Virgin Megastores, Zavvi, MVC, Music Zone, Andy's, Border's and Woolworths, it's not just the story of the downturn.

BBC: Shops 'til they drop