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Terms for subject Earth sciences containing 技术信息 交 换 | all forms | in specified order only
ChineseEnglish
技术信息交换中心美technical information exchange
技术信息交换系统technological information exchange system
技术援助信息交换中心美technical assistance information clearing house
联邦科学技术信息交换中心美clearinghouse for scientific and technical information

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