There was an inverse"C"shape crack zone ahead of mining face where methane was active.

认为工作面前方煤体存在反的＂C＂形裂隙发育带，是瓦斯流动活跃区域。

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It could be a long while before we see a shape-shifting robot squeeze through a crack in the door.

很久以后我们将能看到看到一个会变形的机器人从门缝挤进来。

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It is the moire stone, crack aspect, the shape of Lotus Mountain, near the famous.

龟纹石，是以它的裂纹纵横、形似莲花，酷肖名山而著名的。

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The polymers return to a pre-defined shape when heated to a certain temperature, and, when damage is detected, an infrared laser sends light through the network to the damaged area, triggers the shape-memory, and commands the area to repair the crack or tear -- regaining up to 96 percent of its original strength.

ENGADGET: Shape-memory polymer knows when it's hurt, fixes itself