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关注：1
2013-05-23 12:21
求翻译：To prevent any distortion by the illuminated dust particles, a short-pass filter is used, which is transparent only for wavelengths shorter than是什么意思？ 待解决
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To prevent any distortion by the illuminated dust particles, a short-pass filter is used, which is transparent only for wavelengths shorter than
问题补充： |
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