“Logan slabbing machine”的概念、定义、翻译、参考文献-科学参考

单词	Logan slabbing machine
释义	Logan slabbing machine [`lō·gǝn `slab·iŋ mǝ´shēn] ^{MINING ENGINEERING} A machine that has three cutting chains; two are horizontal-one at the base of the coal seam, the other at a distance from the floor; the third is mounted vertically and shears off the coal at the back of the cut; a short conveyor transfers the coal to the face conveyor.
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