“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	plastics pipe plastics processing plastics processing technology plastics product plastics profile plastics sheet plastics solidification plastic stone plastic telecommunication cable plastic viscosity plastic wave plastic working of metals plastic working of superalloy plastid plastigel plastimeter plastimetry plastique plastisol plastocyanin plastoelastic deformation plasto-elasticity plastogene plastomer plastometer

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