Directional unit is the kernel unit of the traveling waves or transients based ultra-high-speed directional protection for transmission line.

方向元件是基于行波或暂态量的超高速方向保护的核心元件。

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The three color channels of each pixel were regard as 3-dimensional vector, and the unit directional vector and its magnitude represented the chromaticity and the pixel brightness separately.

将每个像素的三个色彩通道看成是一个三维矢量，则矢量的单位方向向量和亮度分别表示像素的色彩和亮度。

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TD-LTE is the 4G standard developed for use across China, and it is now being adopted by operators across the globe. lightRadio Metro Radio houses two lightRadio cubes, fully integrated with a directional antennae, allowing it to provide the coverage normally associated with a much bulkier, heavier remote radio unit linked to an external antenna via an RF coaxial cable.

ENGADGET: Alcatel-Lucent's latest lightRadio development aims to spread TD-LTE across China