In this paper a laser triangulation scanning method for the non-contact measurement of scratches on aircraft skins and aircraft window surfaces is described.
介绍飞机表面划痕非接触测量的激光三角扫描法。
The faintest ochre scratches of prehistoric antelope in a cave open a rare window into Africa 's-and humanity 's-distant past.
那些岩洞里模糊不清的赭石线条勾画的史前羚羊(仿佛)打开了一扇窗口，它通往非洲- - -也是人类—遥远的过去。
The faintest ochre scratches of prehistoric antelope in a cave open a rare window into Africa 's-and humanity 's-distant past.
那些岩洞里模糊不清的赭石线条勾画的史前羚羊(仿佛)打开了一扇窗口，它通往非洲- - -也是人类—遥远的过去。
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