light_direction_only_有道手机词典

1.For certain wavelengths of light, routers along that path would accept signals coming in from only one direction and send them off in only one direction.
这条链路上的路由器对某种特定波长的光束，只接受从一个方向进入的信号，也只向一个方向发送这些信号。
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2.A directional light doesn't have a position, only a direction.
定向光没有位置，只有方向。
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3.Regular light vibrates in all directions perpendicular to its direction of travel; polarized light, however, vibrates only in one plane.
正常光线向各个方向振动垂直的飞行；但是偏振光只有在一个平面上振动。
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