薄煤层

薄煤层 [báo méi céng]

1. ■ girdle; thin seam; low coal seam; low seam

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常用词组

1. ■ 薄煤层采煤法 low seam mining method;

2. ■ 薄煤层采煤机 low seam mining machinery;

3. ■ 薄煤层巷道 crawlway