制造塑料的原料
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plastics-making material
塑料加工材料
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In order to overcome the shortcomings of plate-and-frame which is made of cast iron or rubber, wood, common plastics, the authors have developed a new kind of material for making plate-and-frame.
为了克服铸铁、橡胶、木质和普通塑料板框的缺点，对新材质板框进行了研制。
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