“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	independent set of vertices independent-set polynomial independent set problem Independent Social Democratic Party of Germany independent solution independent source independent statistic independent stochastic process independent submodules independent subset independent system independent system of axioms independent system of functions independent system operator independent technological innovation Independent Television independent temperature and humidity control independent test group independent test group, ITG independent tests independent tissue culture tranformation method independent tour independent trials independent valuation independent value

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