“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	wave function wavefunction wave function collapse wave function in momentum representation wave function of identical particle system wave function of plane wave wave function renormalization wave-function renormalization wavefunction renormalization wave-function renormalization constant wave function theory wave gauge wave generator wave glider wave group wave guide waveguide waveguide acoustooptic tunable filter waveguide all optical waveguide device waveguide all-optical waveguide device waveguide antennas waveguide arc detector waveguide attenuator waveguide below-cutoff attenuator waveguide cavity

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