... optically active 光学活性的; 起偏振作用; 旋光的 optically active atom 光激活原子 optically active exchanger 旋光离子交换剂 ...
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被电流激活后，汞原子发出紫外光，轰击被覆在电子管内部的磷。
Excited by the current, the mercury atoms emit ultraviolet light, which bombards the phosphor coating on the inside of the tube.
因此，这个光谱也被称为线光谱，也被称为原子发射光谱，因为它是由被激活的原子发出的光产生的。
Hence the spectrum is called a line spectrum; it is also called an atomic emission spectrum since it is produced by emission of light from excited atoms.
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