“coal”的概念、定义、翻译、参考文献-科学参考

单词	coal
释义	coal [kōl] ^GEOLOGY The natural, rocklike, brown to black derivative of forest-type plant material, usually accumulated in peat beds and progressively compressed and indurated until it is finally altered into graphite or graphite- like material.
随便看	double jacking double-J groove weld double knit double law of the mean double layer double-length number double limiter double-list sorting double load double-loop pattern double mast double minimal surface double mirror double moding double modulation double nickel salt double pendulum double-pipe exchanger double point double-polarity pulse-amplitude modulation double-pole double-throw switch double-pole single-throw switch double-pole switch double precision double-precision hardware

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。