“metric grain”的概念、定义、翻译、参考文献-科学参考

单词	metric grain
释义	metric grain [`me·trik `grān] ^MECHANICS A unit of mass, equal to 50 milligrams; used in commercial transactions in precious stones.
随便看	pedion Pedionomidae Pedipalpida pedipalpus pediplain pediplanation pediplane pedocal pedodontics pedogenesis pedogenics pedogeochemical survey pedogeography pedography pedolith pedologic age pedologic unit pedology pedometer pedon pedophilia pedophobia pedorelic pedosphere pedotubule

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。