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1·The combustion characters of petroleum coke were between those of soft coal and anthracite .

石油焦的燃烧特性处于烟煤和无烟煤之间。

2·There are many kinds of forms of gas discharge, but the main form is soft coal seam gas discharge.

瓦斯抽放形式有多种，本煤层抽放是其主要形式。

3·However, with the extension of mining depth, the distribution of soft coal seam has been expanding.

然而，随着矿井开采范围的延深，松软煤层的分布范围呈不断扩展趋势。

4·It has good coal adaptability and is especially suitable for soft coal that has high tar content and big gas output.

煤种适应性强，尤其适用于焦油含量高，产气量大的烟煤。

5·The II3123 face is a light type caving face of three-soft coal seam. the roof is cracked, sloughing and roof fall often occur.

前言： 石台煤矿II3123工作面为“三软”煤层轻放工作面，顶板破碎易掉，片帮、冒顶时常发生。

6·As the soft coal seam is high gas content and low permeability. it has been difficult and key for the coal seam gas extraction.

由于松软煤层的瓦斯含气量高而透气性又极差，一直是本煤层瓦斯抽采的难点和重点。

7·There are three coal mines in Xin'an Coalfield. The Shanxi group irregular(2-1) coal seam has soft roof, soft coal and soft floor.

在新安煤田新建的三对矿井，主采煤层均为山西组2-1三软不稳定煤层。

8·After More burial and chemical transformation of the aging organic material, the peat becomes lignite, a very soft coal-like material.

当这些古老的有机物质经过进一步的埋藏和化学变化，泥炭就变成一种非常软的，像煤物质那样的褐煤。

9·The project takes pyrogenic dry distillation gas of soft coal in continuous retort as the fuel gas and produces ferroalloy coke and crude tar oil.

本项目是以烟煤在连续炭化炉中热解的干馏煤气作为城市燃气，同时付产铁合金焦和粗焦油。

10·This paper puts forward support plan through analyzing strata behavior regularity of coal roadway in seam with soft roof, soft coal and soft floor.

文章通过对永华煤矿“三软煤层”煤巷矿压规律进行分析，提出了支护方案。