发布时间:1996-06-01
实施时间:1996-06-01
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[JY 11-1978] 数学信号源技术条件(试行)[已作废]
发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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[JY 118-1982] 磁针(试行)[已作废]
发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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[JY 12-1978] 学生信号源技术条件(试行)[已作废]
发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1996-06-01
实施时间:1996-06-01
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[JY 123-1982] 左右手定则演示器(试行)[已作废]
发布时间:1996-06-01
实施时间:1996-06-01
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[JY 124-1982] 楞次定律演示器(试行)[已作废]
发布时间:1996-06-01
实施时间:1996-06-01
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发布时间:1994-06-01
实施时间:1994-06-01
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发布时间:1994-06-01
实施时间:1994-06-01
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发布时间:1994-06-01
实施时间:1994-06-01
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发布时间:1994-06-01
实施时间:1994-06-01
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