If you use an SLR, the single most helpful accessory you can own, other than a tripod, is a polarizing filter.
如果你使用的是单反相机，比起三脚架来，你能拥有的最有帮助的一款配件就是偏光滤镜了。
In order to improve the image contrast and to single out the desirable signals in a coherent image enhancement system, a polarizing filter was used.
为了在相干象增强系统中提高象的对比度，突出所需用的信号，采用了偏振滤波器。
In order to improve the image contrast and to single out the desirable signals in a coherent image enhancement system, a polarizing filter was used.
为了在相干象增强系统中提高象的对比度，突出所需用的信号，采用了偏振滤波器。
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