“hard coal”的概念、定义、翻译、参考文献-科学参考

单词	hard coal
释义	hard coal [`härd ¦kōl] See <<anthracite>>
随便看	rincon rind rinderpest R indicator ring ring A ring-and-ball test ring-and-bead sight ring-and-circle shear ring-around ring B ringbolt ring bus ring C ring canal ring circuit ring closure ring complex ring counter ring crusher ring current ring D ring data structure ring deoxyribonucleic acid ring depression

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。