由于浑浊程度的增加，并不是所有的粒子都显露出入射光，而且其他粒子的散射辐射在检测器方向受到阻碍。
As the degree of turbidity increases, not all the particles are exposed to the incident light and the scattered radiation of other particles is hindered on its way to the detector.
来自光源（1）的光线的轴线以及反向 散射到光检测器（3）的光线的轴线具有彼此紧邻并基本平行或重合的部分。
The axes of the light rays from the light source (1) and the back-scattering to the light detector (3) have mutually closely adjacent and substantially parallel or coincident portions.
来自光源（1）的光线的轴线以及反向 散射到光检测器（3）的光线的轴线具有彼此紧邻并基本平行或重合的部分。
The axes of the light rays from the light source (1) and the back-scattering to the light detector (3) have mutually closely adjacent and substantially parallel or coincident portions.
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