“coromant cut”的概念、定义、翻译、参考文献-科学参考

单词	coromant cut
释义	coromant cut [`kȯr·ǝ·mǝnt ´kǝt] ^{MINING ENGINEERING} A drill hole pattern; two overlapping holes about 2¹/₄ inches (about 5.5 centimeters) in diameter are drilled in the tunnel center and left uncharged; they form a slot roughly 4 by 2 inches (10 by 5 centimeters) to which the easers can break.
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