product grade

 
  • 產品檔次

product grade的用法和樣例:

例句

  1. With improvement unrefined potassium chloride is directly subjected to carbonization and therefore raises the product quality with similar cost.
    新工藝的主要改進為氯化鉀原料不經精製而直接碳化,從而在成本相仿的情況下提高了產品檔次。
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