Introduces how to synthesize acrylic acid, acrylate and phenylethene quadripolymer into alcohol-soluble acrylic resin and use it as a link stuff to prepare flexible relief block printing ink.
叙述了丙
酸、丙
酸脂、苯乙
四元共聚合成醇溶性聚丙
酸脂
的方法,并以其为连结料制备柔性凸版油墨。
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Because, yes, this sounds very concerning, but, on the other hand, I think about how, like — I don't know — in the '80s and '90s, having Styrofoam was just very normal and that people weren't really even worried about plastics.
因为,是的,这听起来非常令人担忧,但是,另一方面,我想到了,就像——我不知道——在 80 年代和 90 年代,使用聚苯
泡沫塑料是非常正常的,人们甚至都不担心塑料
。
高级英语短文
2023年9月合集