单词 | 铸造件 |
释义 | DEFINITIVE EXAMPLES 权威例句〔polypropylene〕Any of various thermoplastic resins that are polymers of propylene. They are hard and tough, and are used to make molded articles and fibers.聚丙烯:一种热塑性树脂,它是丙烯的聚合物。它们都很坚硬,而且被用来制造铸造件和纤维美国传统 |
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