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COAL SEW FOR EXTRACTION AND DELIVERY OF COAL ON THIN INCLINED SEAMS
COAL SEW FOR EXTRACTION AND DELIVERY OF COAL ON THIN INCLINED SEAMS
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机译:薄倾斜煤层中煤的提取与输送的煤缝
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摘要
Coal sew for extraction and delivery of coal on thin inclined seams has vertical scrapers with cutters that are rigidly connected in upper part to multi-link barrier with possibility of reciprocal motion and drives. Vertical scrapers in lower part are rigidly connected to barrier through horizontal wedge-like scrapers.
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