The team pioneered solar cells made using CQD, nanoscale materials that can readily be tuned to respond to specific wavelengths of the visible and invisible spectrum.
该小组率先使用胶体量子点制作太阳能电池，一种能够容易调整，对可见及不可见光谱中特定波长进行反应的纳米材料。
Wireless spectrum, while invisible, is not an infinite resource. In fact, it's pretty damn constricted, at least in crowded urban areas.
无线带宽，虽然看不见，但也不是一种无穷无尽的资源。事实上，无线带宽异常之小，至少在拥挤的城市中如此。
Wireless spectrum, while invisible, is not an infinite resource.
无线带宽，虽然看不见，但也不是一种无穷无尽的资源。
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