分区分段开采
subarea-subsection mining
波长分开的多路存取
WDMA Wavelength Division Multiple Access
波长分开的多路复用技术
WDM Wavelength – Division Multiplexing
波长分开的多路复用器
WDM Wavelength – Division Multiplexer
基于段长分布的隐含 Markov 模型(DDBHMM)
agricultural products export
延长组长6-长8段
Chang 6
Chang 7 and Chang 8 formation
大间距无底柱分段崩落法
Large space non pillar sublevel caving
房柱开采法
chamber and pillar method
chamber and pillar system