This is because the city water treatment process has already removed the bacteria present in river or gray water, which reduces the ozone demand.

因为城市水治疗程序有在河中已经移动细菌出现或者使水变灰色，所以这是，减少新鲜的空气要求。

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Results Compared with dynamic CT, 93.9% (31/33) of tumors before treatment were demonstrated as enhancement on both intermittent harmonic power Doppler imaging and gray-scale harmonic subtraction.

结果以动态增强CT结果为金标准，治疗前33个肝癌结节，超声造影增强的阳性率为93.9%（ 31/ 33） ；

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In the image before treatment, understand the whole or local image of gray distribution is very necessary.

在对图像进行处理之前，了解图像整体或局部的灰度分布情况非常必要。

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She added that Mr Gray was initially placed in a private treatment area but was moved into a general waiting area after a full scale emergency came into the casualty department.

BBC: Rod Gray