“longwall pillar working”的概念、定义、翻译、参考文献-科学参考

单词	longwall pillar working
释义	longwall pillar working [`lȯŋ´wȯl ¦pil·ǝr ´wǝrk·iŋ] ^{MINING ENGINEERING} A technique used to extract coal pillars left behind in long-pillar working.
随便看	mixed-phase flow mixed potential mixed radix mixed-radix number mixed reflection mixed salvo mixed sampling mixed strategy mixed surd mixed tensor mixed tide mixer mixer-first detector mixer-settler mixer-settler extractor mixer tube mixing mixing chamber mixing length mixing ratio mixing transformation mixing valve mixite Mixodectidae mixogram

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