Artificial rock is absolutely necessary for exploitation research in oil - field.

人工岩样是油气田开采研究中必不可少的用品。

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This paper introduced the manufacture principle, property and initial application of HNT artificial rock sample.

介绍了HNT人造岩样的制作原理、特性及其初步应用情况。

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Events include artificial rock male, female difficulty ", male, female speed RACES, male, female climb the stone."

赛事包括人工岩壁男、女难度赛，男、女速度赛，男、女攀石赛。

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An artificial rock-climbing wall covered one side of the glass-and-steel research center.

NEWYORKER: Green Giant

Over the weekend, Spirit drilled its first artificial hole in a rock - the football-sized Adirondack - and took readings from it using the science instruments on its robotic arm.

BBC: NEWS | Science/Nature | Rover sets Mars distance record

Even teenagers, with their boundless enthusiasm for looking ridiculous, have to draw the line somewhere, and the artificial fabrics and science-fiction design of glam rock's outfits, which make the costumes in the closing credits of "Mamma Mia!"

WSJ: Keeping It Glam | 'Glam! 21st Century Factory' at Tate Liverpool