Manufacturing the hands concludes with coating the luminescent substance, followed by a visual check.

指针制作完成后，涂上一层夜光物质，然后进行外观检验。

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As an adjacent top layer, a coating containing silica substance is used.

作为一个相邻的面层，含有硅涂层物质的使用。

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It is mainly used in the thickness measurement of nonmetal coating mantled on metallic substance. At the same time the sensor can meet the high precision non-contact request in industrial measurement.

并且能够满足工业自动检测中高精度和非接触测量要求，同时测量范围和精度可随不同的应用要求而进行大范围的调整。

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Birds have been found with the substance congealed on their feathers, reducing their waterproof coating and ability to stay warm and afloat at sea.

BBC: Seabird deaths substance 'identified as oil substance'

She said the birds have been found with the substance congealed on their feathers, which reduces their waterproof coating and ability to stay warm and afloat at sea.

BBC: Seabird deaths: Pollution causes 'burning' to seabirds