...键层运动对覆岩及地表移动影响的研究 - 造价员网 关键词： 关键层；岩层与地表移动；耦合关系 [gap=742]Key words：key stratum；strata movement and subsidence；coupl ing relation between soil and key stratum ..
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... key sample 知标本 key stratum标准层 key to interpretation of vegetation 植被类型判读检隧 ...