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Research, Development, Test and Engineering
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entr.
研究、开发、测试与工程
research, development, test and engineering
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aviat.
研究、发展、测试与工程
espac.
研究、开发、试验和工程
research, development test and engineering
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sciences.
研究、开发、实验和工程〔鉴定〕
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