petrographical methods 煤岩学方法
petrographical microscope 岩石显微镜
petrographical assemblage 岩石相组合
petrographical characteristics 岩相学特征
petrographical coal blending 煤岩配煤
In analysis and pattern recognition of petrographical images, 3d object reconstruction is an important research.
在石油地质图象分析和模式识别中，三维物体重建是很重要的研究。
The structure of unconsumed pulverized coal is different from that of coke according to petrographical microanalysis.
通过岩相显微分析确定了炉尘中未消耗煤粉和焦炭存在的不同结构形态。
The tectonically deformed coal with special petrographical features and compli- cared origin developed in South China.
我国南方构造煤发育，具有特殊的煤岩特征和复杂的成因。
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