“radial percussive coal cutter”的概念、定义、翻译、参考文献-科学参考

单词	radial percussive coal cutter
释义	radial percussive coal cutter [`rād·ē·ǝl pǝr`kǝs·iv `kōl ´kǝd·ǝr] ^{MINING ENGINEERING} A heavy coal cutter having a percussive drill, with extension rods; used in headings and rooms in pillar methods of working and for drilling shot-firing holes.
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