“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	sedge family sediment sediment acoustics characteristics sediment acoustics classification sediment acoustic survey sediment adsorption sediment aggregation sediment allocation and utilization sedimentary area sedimentary base level sedimentary basin sedimentary cycle sedimentary deposit sedimentary differentiation sedimentary environment sedimentary event sedimentary evolution of coal basin in China sedimentary facies sedimentary facies association sedimentary facies model sedimentary formation structural map sedimentary paleogeography of the South China Sea sedimentary petrology sedimentary rhythm sedimentary rock

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。