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单词
room mining, chamber mining
释义
room mining, chamber mining
房式采煤法; 每隔一定距离开采煤房,在煤房之间保留煤柱以支撑顶板的采煤方法。
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red-chalks
red chamber
red channel
red channels
red charcoal
red check
redcheck
red-checked
red-checkeds
red-cheeked
red cherry
red-chestnut
red chicken
red-chile
red chilli sauce
red chilli skin
Red China
red chinas
Red Chinese
red chip
red-chip
red chip futures
red chips
red chokeberry
red chrome
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更新时间:2026/9/20 10:19:51