“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	scene matching guidance scene matching system scene mode scene outside language scene perception scene protection scene questioning scene rearch scene recognition scenery brightness scenery facility scenery film scenery in dance scenery line scenery onstage scenery pattern scenery shot scene segmentation scenes in and around Kyoto screens Scenes of City Life Scenes of Clerical Life Scenes of Yan’an scene structure analysis scene understanding scenic and historic areas

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