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信封随机
信封随机是在临床试验中,随机程序编好后,使用盲法信封进行方案隐藏,每个研究对象所接受的治疗方案完全由随机函数生成的随机编号所决定。
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Digital Content Next
digital content provider
Digital Content Service
digital control
digital controlled circuit
digital controlled circuit with microcomputer
digital control of concrete crack
digital control of curtain wall installation
digital control of mechanical, electrical and plumbing (MEP) installation
digitalcontrol of steel structure installation
digital control system
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Digital Copyright Identifier,DCI
Digital Copyright Protection Technology Research and Development Project
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digital data network, DDN
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