The paper did research on the thickness, depth, different spacing steel, and other bugs in the second concrete lining, through the model experiment of GPR in the highway tunnel lining detection.

本文通过地质雷达公路隧道衬砌检测的模型试验，研究了地质雷达检测二衬混凝土厚度、二衬中的不同深度，不同间距钢筋以及衬砌模型中的缺陷。

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During the excavation of underground chamber in the soft rock, lining thickness are increased to keep the stability of surrounding rock.

在软弱岩体中进行地下洞室开挖时，通常采用加大衬砌厚度来维持围岩的稳定。

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Weight measurement method is proved reliable through contrast experiments of thickness measurement method and weight measurement method ot test the wear of clutch lining and brake lining.

作者用测厚法与称重法进行的测量离合器片和刹车片磨损值的对比试验，证明称重法真实可靠。

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Optical Coherence Tomography (OCT) is a scan that measures the thickness of the lining at the back of the eye - the retina.

BBC: Simple eye scan can reveal extent of Multiple Sclerosis