Figure 6-9 shows the oven with the small aperture for viewing the radiation leaving the enclosure.

图6 -9表示一个空腔，上面开著一个小孔，用来观察空腔发出的辐射。

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Figure 6-9 shows the oven with the small aperture for viewing the radiation leaving the enclosure.

图6 -9表示一个空腔，上面开著一个小孔，用来观察空腔发出的辐射。

youdao