1) uneconomically minable coal seam
非经济可采煤层
1.
By combining the domestic and international actuality on very thin coal seam mining,the influence factors on the seam mining are analyzed step by step,the decisive factors which affect comprehensive evaluation result are sorted and selected,the technique guide line for the uneconomically minable coal seam is defined and the industrial index of the very thin coal seam exploitation.
研究了煤层赋存的地质特征与极薄煤层的开采工艺,结合国内、外极薄煤层的开采现状,对影响煤层开采的主要因素逐类进行分析,筛选出影响综合评价的主导因素,界定了非经济可采煤层的技术指标,对七台河地区极薄煤层开采的工业指标提出了建议,可为政府在矿产资源管理与制定相关政策方面提供参考性意见。
2) economic recoverable coal reserves
煤炭经济可采储量
1.
On the basis of putting forward a method of the determination of economic recoverable coal reserves under the conditon of market economy, the computing method and evaluation model are investigated, and a practical evaluation formula is given.
煤炭经济可采储量是矿井设计和生产的基础，在提出市场经济条件下确定经济可采储量方法的基础上，对我国煤炭经济可采储量的计算方法、评价的数学模型进行了研究，导出了实用的评价公式。
3) workable seam
可采煤层
1.
The geology survey of Hegang coal field are introduced and some obvious characters of workable seam are compared.
介绍了鹤岗煤田的地质概况 ,并对主要可采煤层的一些比较明显的特征进行了对比。
5) unworkable seam
不可采煤层
补充资料：非想非非想处天
1.佛教语。即三界中无色界第四天。此天没有欲望与物质﹐仅有微妙的思想。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条