“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	Helmholtz, Hermann Ludwig Ferdinand von Helmholtz-Kelvin contraction Helmholtz-Kelvin theory helmholtz-kelvin time scale Helmholtz-Ketteler dispersion formula Helmholtz-Ketteler formula Helmholtz-Lagrange theorem Helmholtz layer Helmholtz reciprocity theorem Helmholtz representation helmholtz resonance sound absorber Helmholtz resonator Helmholtz reversion theorem Helmholtz's equation Helmholtz's reciprocity theorem Helmholtz theorem Helmholtz theorems Helmholtz time scale Helmholtz’s vorticity-tube theorems helminth helminthiasis Helms-Burton Act Helmut Baierl Helmut Lachenman Helmut Moritz

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