单词	back beam
释义	back beam 经轴
随便看	layered mining layered min-sum algorithm layeredmodel layered model layered model of workflow layered modular layered moisture content layered monitoring Layered Muhicast layered mulficast layered multi-body information model layered multicast layered-multicast layered multiple description coding layered multiple strata layered multiple volume holographic gratings layered multi-subnet layered nanocomposite layered nanoscale material layered nano-silver phosphate layered narration layeredness layered network layered network model layered networks