Samples should be cut and processed to obtain a test surface.

试样应切割加工，以便获得检验面。

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Once surface is clean and dry, test surface and be sure that it's clean.

一旦表面清洁，干燥，测试表面，并确保漆面是干净的。

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A system consisting of CCD sensor and computer may be used to test surface braiding Angle of three dimensional composite material preform, and analyse its unevenness.

该系统以CCD为传感器，与微型计算机连接，进行三维编织复合材料预制件表面编织角的检测，并对其进行不匀分析。

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The buoys also contain weather-sensing devices that test for surface temperatures, subsurface temperatures, wind speed, and other indications of changing weather.

CNN: La Nina spawns extreme weather

The Iranians openly test-fired 14 surface-to-surface missiles with a range of 2, 000km (1, 250 miles) on Tuesday as part of a 10-day programme of military exercises.

BBC: William Hague concerned over Iranian missile tests

In the 20 or so years I have been playing here at my home ground in Perth, I must admit I had never seen so much grass on the surface of a Test pitch and it was therefore no surprise to hear all the talk and prediction leading into the match.

BBC: Ashes: Australia coach Justin Langer's key moments