“prop-crib timbering”的概念、定义、翻译、参考文献-科学参考

单词	prop-crib timbering
释义	prop-crib timbering [`präp ´krib `tim·bǝ·riŋ] ^{MINING ENGINEERING} Shaft timbering with cribs kept apart at the proper distance by means of props.
随便看	undercooling effect undercurrent undercurrent relay undercut undercutting underdamping underdeck tonnage underdevelopment underdraft underdrain underdrive press underearth underfeed stoker underfill underfit stream underfloor raceway underflow underflow conduit underground underground burst underground gasification underground geology underground glory-hole method underground ice underground milling

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