copper modified

 
  • 甲醛

copper modified的用法和样例:

例句

  1. A new ketone resin is prepared from residuum of cyclohexanone rectification and formaldehyde with compound acid as catalyst,it is modified with pyromellitic dianhydride.
    以环己酮精馏残渣和甲醛为原料,用复合酸作催化剂,通过均苯四甲酸酐改性,合成一种新的酮树脂。

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