Therefore, light rays emitted by the luminous source of the handheld electronic device can be uniformly transmitted from the keys.

由此，该手持电子装置的发光源所发出的光线能够均匀地从按键透射出。

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As if the canvasses were film negatives placed against a luminous source, nebulous human shapes gradually come into relief, thrust to the fore by the artist's painted light intruding from behind.

这些画布就好像是被放在强光下的胶片，大量的人形逐渐浮现，由艺术家在作品后部绘入的光线推上前来。

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The short arc Xenon lamp is a sort of point source having very high luminous intensity and a continuous spectrum from ultraviolet to IR.

短弧氙灯是一种发光强度高，具有从紫外到红外的连续光谱的点光源。

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Besides revealing clues about the lost galaxy, the black hole itself, called HLX-1 (Hyper-Luminous X-ray source 1), is scientifically interesting, researchers said.

MSN: Rare Black Hole Survives Galaxy's Destruction