“cut-off grade”的概念、定义、翻译、参考文献-科学参考

单词	cut-off grade
释义	cut-off grade Geology and Earth Sciences Lowest grade or assay value of ore in a deposit that will recover mining costs; the cut-off grade determines the workable tonnage of an ore.
随便看	roof thrust rook room and pillar Roosa, Stuart Allen (1933–94) Roosevelt, Franklin D. (1882–1945) Roosevelt, Theodore (1858–1919) root root cap root certificate root directory rooted tree root hair rootkit rootlet root locus root mass ratio root-mean-square root mean squared deviation root mean squared error root-mean-square value root-mean-square velocity root nodule root(of an equation) root(of a tree) root of unity

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