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polyfunctional alcohol造句

"polyfunctional alcohol"是什么意思   

例句與造句

  1. Formaldehyde is also a precursor to polyfunctional alcohols such as pentaerythritol, which is used to make paints and explosives.
  2. It's difficult to find polyfunctional alcohol in a sentence. 用polyfunctional alcohol造句挺難的

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