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optical spectral region
释义
optical spectral region
光学光谱范围
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coal pit
coal pitch
coal planer
coalplex
coal plough
coal pocket
coal porosity
coal powder
coal powder injection equipment
coal preparation plant
coal-preparation plant
coal preparation process
coal processing
coal production
coal production under unified central planning
coal pulp
coal-pulverizing plant
coal puncher
coal pyrolysis
coal quality
coal quality control
coal quality log
coal rake seam
coal rank
coal rank semifusinite
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更新时间:2024/12/26 13:40:00