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	direct cost direct costing direct costing income statement direct cost method direct county electoion direct-coupled direct-coupled amplifier direct coupled amplifier direct-coupled circuit direct-coupled machine direct coupled transistor logic direct-coupled transistor logic direct-coupled turbine direct-coupling direct crossgraphy direct crosstalk direct cruuent arc welder direct culture direct current direct-current direct-current ammeter direct-current amplifier direct current amplifier direct-current and alternating current comparator direct-current aoupling

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