“shot-firing curtain”的概念、定义、翻译、参考文献-科学参考

单词	shot-firing curtain
释义	shot-firing curtain [`shät ¦fīr·iŋ ´kǝrt·ǝn] ^{MINING ENGINEERING} A steel frame with chains about 6 inches (15 centimeters) apart suspended from the roof about 9 to 12 feet (2.7 to 3.7 meters) from the face of an advancing tunnel to intercept flying debris when shot-firing at the face.
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