“ball coal”的概念、定义、翻译、参考文献-科学参考

单词	ball coal
释义	ball coal [`bȯl ´kōl] ^GEOLOGY A variety of coal occurring in spheroidal masses.
随便看	error rate error ratio error recovery routine error report error routine error signal error sum of squares error tape error voltage ertor ERTS erucic acid eruciform eruption eruptive prominence eruptive rock eruptive star Erwinia Erwinieae erysipelas erysipeloid Erysipelothrix Erysiphaceae Erysiphales erythema

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