layerover叠掩layern.层vi.分层vt.将某物堆积成层layer-divided sinking apparatus分层沉降仪layer-by-layer rebound method逐层回弹法layered overlay multicast network分层覆盖组播网络Layer-by-layer assembled film层层自组装膜layer three communication function分层三通信功能layered perovskite manqanese oxide层状钙钛矿锰氧化物layered saturated poroelastic soil层状饱和土layered communication architecture分层通信体系结构Layer-by-layer self-reaction层-层自反应layering and flowing teaching mode分层次流动性教学模式