紫外线发光二极管则可以提供一种方式来提高电磁频谱的一部分，从而生产出颜色更深、更多姿多彩的莴苣。
Ultraviolet LEDs could provide a way to replace and enhance this part of the electromagnetic spectrum to produce darker, more colorful lettuces.
现在有一个植物生理学家的团队已经研究出一种方法，这种方法就是通过用紫外线发光二极管使莴笋颜色更深更红(因此更健康)。
Now a team of plant physiologists has developed a way to make lettuce darker and redder-and therefore healthier-using ultraviolet light-emitting diodes (LEDs).
近几年来，宽禁带半导体材料引起人们的关注，因为这些材料在蓝光及紫外光发光二极管、半导体激光器和紫外光探测器上有重要的应用价值。
In recent years, much attention has been given to wide band gap semiconductors for the wide USES in blue and ultraviolet light emitters and detectors.
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