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在 course:interesting_problems:2015:topic11 中的文件
- 1901_-_semiconductor_rectifiers_patented_as_cat_s_whisker_detectors_-_the_silicon_engine_computer_history_museum.png
- 1366×1713
- 2015/04/16 16:08
- 603.5 KB
- build_an_antique_style_crystal_radio.png
- 1366×27276
- 2015/04/16 16:10
- 8.8 MB
- galena.pdf
- 2015/04/16 16:11
- 1.4 MB
- how_to_make_a_simple_crystal_radio_cats_whisker_detector.png
- 1366×3319
- 2015/04/16 16:08
- 2.1 MB
文件
- 日期:
- 2017/03/17 15:24
- 名称:
- 频率2.jpg
- 说明:
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- 格式:
- JPEG
- 大小:
- 4MB
- 宽度:
- 5312
- 高度:
- 2988
- 相机:
- samsung SM-G9008W
- 相关的:
- 课题13参考资料