通常采用的膜厚光学测量法只能给出透明材料的线性厚度，而不能对非透明材料进行厚度测量，也不能直接给出被测材料的质量厚度。

Commonly, the optical film thickness measurement method is only used for linear transparent material thickness measurement, and can also not directly measure the thickness of material's quality.

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当研究人员解剖这些现存的易感染的小鼠时，他们发现其肠道典型的线性分泌粘液层的厚度仅为受保护小鼠的一半。

When the researchers dissected these now susceptible mice, they discovered that the mucous layer that typically lines the gut was only half as thick as in protected mice.

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介绍了一个设计性实验—利用反射式光强位移传感器工作特性曲线上升沿的线性区测量纸张厚度。

The thickness of paper is measured using the linear area of the characteristic curve of an optic-filter sensor.

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