英语词汇“research and development”的读音、翻译、释义、用法及例句-心情故事网

词汇	research and development
释义	research and development 【计】研究与开发, 研究与发展【化】究研与开发【经】研究和发展(开发)
随便看	Duckworth's syndrome ducky duclauxin ducol ducol-punched card ducol-punched card system Ducrey's bacillus duct ductal duct cancer duct carcinoma duct-carcinoma ductile ductile cast iron ductile damage ductile fracture ductile material ductility ductility test ductility transition temperature ductilometer duct(ing) lining ductless ductless glands ducto-acinar

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