“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	theory of spaces theory of special creation theory of special relativity theory of spectra Theory of Sphere-Heavens theory of sphere-heavens Theory of Stable Heavens theory of star-streaming theory of state formation theory of statistical decision theory of statistical experiments theory of statistical inference theory of stellar atmospheres theory of stellar evolution theory of stellar interior structure theory of structures theory of subordinate joint offender theory of surfaces theory of sustainable development theory of tabula rasa theory of team production theory of technical progress induced by element scarcity theory of technology theory of terpidation theory of testing hypothesis

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。