英语词汇medium rank coal怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

网络释义

1
?中煤阶煤
定义中文名称： 中煤阶煤 英文名称： medium rank coal 定义：国际煤层煤分类中,镜质组平均随机反射率小于2.0%,且含水无灰基高位发热量不低于24MJ/kg的煤。应用学科：煤炭科技（一级学科）；煤炭加工利基

短语

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low-medium rank coal
中低煤化阶段煤

双语例句

1
The reservoirs of the medium rank coal characterize low gas content, low gas saturation, good permeability, and high energy in Hedong area of Shanxi, China.
中国山西河东地区中阶煤储层的含气量比较低、含气饱和度低，而储层渗透性好，储层能量比较大；
2
The variation of medium pore diameter and porosity factor is in accordance with that of the pore volume, showing a high permeability of low rank coal reservoirs.
中值孔径、孔隙率的变化特征与孔容一致，预示了低煤级煤储层较高的基岩渗透率。
3
The main reason for the rise of the coal rank and its composition transformation is the process of regional metamorphism and the influence of medium conditions around it.
造成这种煤的变质程度升高而夹矸成分转化的主要原因是区域变质作用及周围介质条件影响所致。

单词	medium rank coal
释义	medium rank coal 简明释义中煤阶煤网络释义 1 ?中煤阶煤定义中文名称：中煤阶煤英文名称： medium rank coal 定义：国际煤层煤分类中,镜质组平均随机反射率小于2.0%,且含水无灰基高位发热量不低于24MJ/kg的煤。应用学科：煤炭科技（一级学科）；煤炭加工利基短语 1 low-medium rank coal 中低煤化阶段煤双语例句 1 The reservoirs of the medium rank coal characterize low gas content, low gas saturation, good permeability, and high energy in Hedong area of Shanxi, China. 中国山西河东地区中阶煤储层的含气量比较低、含气饱和度低，而储层渗透性好，储层能量比较大； 2 The variation of medium pore diameter and porosity factor is in accordance with that of the pore volume, showing a high permeability of low rank coal reservoirs. 中值孔径、孔隙率的变化特征与孔容一致，预示了低煤级煤储层较高的基岩渗透率。 3 The main reason for the rise of the coal rank and its composition transformation is the process of regional metamorphism and the influence of medium conditions around it. 造成这种煤的变质程度升高而夹矸成分转化的主要原因是区域变质作用及周围介质条件影响所致。
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