“marginal grade”的概念、定义、翻译、参考文献-科学参考

单词	marginal grade
释义	marginal grade Encyclopedia 工学〔矿产工业指标〕释 cut-off grade；marginal grade边界品位在圈定矿体时，对单个矿样中有用组分含量的最低要求，以作为区分矿石和围岩的界限品位。是固体矿产工业矿体圈定时的一项品质指标。
随便看	circular aperture circular aperture diffraction measurement circular arc circular arc tooth cylindrical gear drive circular argument circular array circular barrel circular birefringence circular body circular chart circular chessboard circular clay bar overlaying Circular Coin with a Circular Hole Circular Coin with a Square Hole circular cone circular congruence circular conical surface circular conoid circular convolution circular coordinate circular correlation circular cumulative causation circular current circular curve circular curve location

科学参考收录了854744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。