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comparatively regular coal seam
释义
comparatively regular coal seam
较稳定煤层; 煤层厚度有一定变化,但规律性较明显,结构简单至复杂,全区可采或大部分可采,可采范围内厚度变化不大的煤层。
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bench and bar
bench and stool cover
bench angle
bench anvil
bench apron
bench arc welding machine
bench assembly
bench assembly department
bench axe
bench balance
bench bale cutter
bench band saw
bench-bar-media
bench blasting
bench bleeding
bench block
bench blotter
bench blower
benchboard
bench board
bench bone saw
bench border irrigation method
bench bottom burden
bench calibration
Bench carpenter
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更新时间:2026/3/30 9:25:26