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美洲国家总统宣言
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美洲国家总统宣言
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历史学
〔现代〕
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Declaration of the Presidents of America
《美洲国家总统宣言》
1967年4月14日在乌拉圭的埃斯特角会议上签署的文件。
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photoelectric material
photoelectric measurement
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photoelectric polarimetry
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photoelectric shaft speed monitoring device
photoelectric solar magnetograph
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photoelectric spectrophotometry
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photoelectric star-photometer
photoelectric Stokes polarimeter
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photoelectric theodolite
photoelectric tracking
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