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1. Oxford Dictionary

   pretreatment

   • IPA[ˌpriːˈtriːtm(ə)nt]

   英式

   • n.
     the treatment of something with a chemical before use

   • noun: pretreatment, plural noun: pretreatments

2. • 釋義

   n.

   名詞

   • 1. the treatment of something with a chemical before use the pretreatment of the wood had several beneficial effects on the pulping process our new technique uses a lot less water than previous pretreatments
3. • 更多解釋

   pretreatment

   • IPA[prēˈtrētm(ə)nt]

   美式

   • n.
     the treatment of something with a chemical before use: the pretreatment of the wood had several beneficial effects on the pulping process our new technique uses a lot less water than previous pretreatments

   Oxford American Dictionary