The double-barrier light emission tunnel junctions have been fabricated. The characteristics of electronic resonant tunneling with the junctions have been analyzed.

制备了含两层绝缘层的双势垒结构隧道发光结，介绍了其结构特点，分析了电子在结中的共振隧穿特性。

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Even if a mosquito somehow managed to penetrate such a barrier, a second light curtain set up around a bed, for example, would provide further protection.

即使蚊子能穿过一道此类屏障，第二道光幕，比如说设立在床周围，会提供进一步的保护。

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Naturally occurring fluorescence emitted and captured using powerful underwater strobes and special barrier filters that only allow specific wavelengths of light.

这种自然产生的荧光现象，是由功能强大的水下频闪灯以及只允许特定波长的光通过的特殊屏障滤光打光并捕获入镜的。

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The bill has proposed a definition of a high hedge at two metres, formed by a row or two of evergreens, such as the fast-growing leylandii, which forms a barrier to light.

BBC: High hedge bill is intended to reduce disputes

Then the researchers came up with the idea of a light barrier.

FORBES: Using A Light Barrier To Repel Mosquitoes

Some scientists have long thought there might be a way to surpass the light barrier, and if so, certain limited kinds of time travel might be possible.

FORBES: Light's Limit: There's No Getting Around It