... coarse grain || 粗晶粒，粗粒，粗纹理 coarse grained coal || 粗纹理煤 coarse grained iron || 粗晶生铁 ...
基于8个网页-相关网页
coarse-grained coal 粗纹理煤
coarse grained coal
粗粒煤
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In the part of west flank of Lujiatuo minefield, the normal siltstone roof of coal seam 8 changed into coarse to medium-grained sandstone, and also had phenomenon of coal seam pinch-out.
吕家坨井田西翼部分区域八煤层顶板由正常的粉砂岩变为粗中砂岩，并有煤层变薄现象。
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