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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