英语词汇“bord-and-pillar”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	bord-and-pillar
释义	bord-and-pillar \\| ̷ ̷ ̷ ̷\| ̷ ̷ ̷ ̷\ adjective : of or relating to a system of coal mining in which tunnels are driven in a checkerboard pattern having massive square pillars between them which are gradually cut away as the work proceeds
随便看	submerged submerged submerged-tube boiler submergement submergence submergent submergible submersal submerse submersed submersible submersion submetacentric submetallic submeter submetering submicrogram submicron submicroscopic submiliary submillimeter subminiature subminiature subminiature camera subminiaturization

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