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关注:1
2013-05-23 12:21
求翻译:With respect to this, the luminous flux is supplied directly on the point of light input of the test specimen or on its uppermost, optically effective area.是什么意思?![]() ![]() With respect to this, the luminous flux is supplied directly on the point of light input of the test specimen or on its uppermost, optically effective area.
问题补充: |
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