In this dissertation, we assemble luminescent materials in self-prepared anodic aluminum oxide (AAO) membrane and porous ...

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The four prominent galaxies seen in this intriguing telescopic skyscape are one such group, Hickson 44, about 100 million light-years distant toward the constellation Leo., 在这张有趣的望远镜影像中我们可以看见4个明显的星系，这 ...