A kind of washboard - like crack on steel plate surface is introduced.

文章介绍钢板表面产生的一种搓板状裂纹。

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The steel plate surface has a cultured and clear wood grain ectype and inhibit square space pattern the beauty is generous.

钢板表面具有典雅清晰的木纹浮雕，并压制方格图案，美观大方。

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Chemical graining: the lithographic plate surface is etched to produce a fine grain by the application of a strong acid or alkali solution.

化学磨版：用强酸或强碱溶液在平版印版的版面上腐蚀，造成幼细微粒表面。

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Plate tectonics is the area of science that explains why the surface of the Earth changes and how those changes cause earthquakes.

VOA: special.2010.01.12

When this happens, one plate moves past the other, suddenly causing the Earth's surface to split.

VOA: special.2010.01.12

What's more, a machine-made surface produces the wrong kind of friction: to do its job precisely, the plate's surface needs minute scorings, of only a few microns each, where machine oil can reside.

CNN: ASIANOW - TIME Asia | GizmoLand! | Man Beats Machine

The Earth is just too unusual a place, they insisted, with its stable orbit, nearby moon, watery surface, plate tectonics and unique position in the galaxy.

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Most photomasks are created by etching away a thin film of light-blocking chrome from the surface of a quartz plate.

FORBES: Trick of the Light