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duplexing tube
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duplexing tube
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duplexing tube
天线开关管
雷达发射脉冲功率与接收目标回波信号共用一副天线,用来完成收发转换功能的器件。
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preliminary hearing
preliminary hearing personnel
preliminary interpretation of remote sensing data for geological features
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preliminary orbit
preliminary performance before the big play
Preliminary photography
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preliminary prospected well
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Preliminary Research on Archival science theory and history
preliminary study report on Wuhan Regional Planning
preliminary survey
preliminary work of hydropower project
preliminary work of mining design
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preloading
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pre-Lopingian crisis
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