塑料工业中的苯酚、尿素、密胺、环氧树脂等各种塑料成型的颗粒。
Plastics industry - All kinds of plastic molding particles made from phenol, urea, melamine, and epoxy.
塑料工业中的苯酚、尿素、密胺、环氧树脂等各种塑料成型的颗粒。
Plastics industry — All kinds of plastic molding particles made from phenol, urea, melamine, and epoxy.
本文以碳纤维和环氧树脂湿法缠绕成型的NOL环作为研究对象。
The researches object of this thesis was wet wrapped NOL-rings with carbon fiber and epoxy resin.
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