preconcentrate

词形变化

preconcentrates 三单 preconcentrates preconcentrating preconcentrating 现在分词 preconcentrated 过去式 preconcentrated 过去分词

释义与例句

v.
  1. 1.

    To concentrate (a substance) in advance

    及物

词源

From pre- + concentrate.

来源：wiktionary