“prop-free”的概念、定义、翻译、参考文献-科学参考

单词	prop-free
释义	prop-free [`präp ´frē] ^{MINING ENGINEERING} A face with no posts between the coal and the conveyor used to remove it in longwall mining of a coal seam.
随便看	provenance proventriculus province provincial series proving proving ring provirus provitamin provitrain provitrinite prow PROWL Proxima Centauri proximal proximal convoluted tubule proximate analysis proximity detector proximity effect proximity-effect microbridge proximity-focused tube proximity fuse proximity sensor proximity warning indicator proximoceptor PRR

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