新型橡塑助剂NRF901补强性能的研究--中国橡胶助剂网 关键词:补强助剂;炭黑;烟煤;煤矸石 [gap=608]Keywords:strengthening helping agent;carbon black;soft coal;gangue
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soft coal seam 松软煤层
soft coal level 松散煤层
soft coal entry 软岩煤巷
soft coal boilers 烟煤锅炉
blowing soft coal 喷吹烟煤
soft coal opening 软煤巷道
deformed soft coal 构造软煤
soft coal thickness 软煤厚度
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同义词: bituminous coal
以上来源于: WordNet
N → another name for bituminous coal
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。
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。
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。
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