Using the ultrasonic wave detector to probe the flexible range of the extraction tunnel, grasping the rule of deformed tunnel directs the supporting design of the tunnel bolt.

利用超声波探测仪探测回采巷道的松动范围，掌握巷道的变形破坏规律，以此指导巷道的锚杆支护设计。

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The U.S. military has also invested in a range of flexible solar-panel technologies designed to power everything from night vision equipment and image intensification devices to laser-range finders, battlefield-ready laptop computers.

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Also flexible is the target range for the initial share price when the company goes public.

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The Center believes the United States must retain a flexible, long-range penetrating bomber capability.

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