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- Study on the compound supporting technology of deep roadway in tilted stratum
深井倾斜岩层巷道复合支护技术研究 - A sharp ridge with steeply sloping sides , produced by erosion of the broken edges of highly tilted strata
豚脊丘,陡峻的山脊由于对高斜层破碎山背的侵蚀而形成的陡峭的山背
Last modified time:Wed, 13 Aug 2025 00:29:56 GMT