“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	phosphorescence quantum yield phosphorescence spectrometry for pharmaceutical analysis phosphorescence spectrum phosphorescent luminescent materials phosphorescent material phosphorescent material, phosphor phosphorescent polymer phosphorescent scintillation phosphoribosyl pyrophosphate phosphoric acid phosphoric acid collector phosphoric acid fuel cell phosphoric acid fuel cell (PAFC) phosphoricacidtributylester phosphoricacidtributylester; butylphosphate phosphoric anhydride phosphor imager phosphor imaging phosphorimeter phosphorite phosphorization phosphorography phosphorolysis phosphorothioate oligonucleotide，PS-ODN phosphorous acid

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