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mechanized
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DB3203/T 1018-2022苹果宽行密植机械化作业技术规程Code of practice for wide row dense mechanized planting of a...
2023-04-17
Rational cutting height for large cutting height fully mechanized top-coal caving
2020-06-12
Vertical transportation system of solid material for backfilling coal mining technology
2020-06-12
Fracture mechanics model of fully mechanized top coal caving of shallow coal seams and its applicati
2020-06-12
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