12th Beijing Int'l Sci-Tech Expo Opens
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A Chinese staff shows off an explosive-proof robot at the 12th Beijing International Science and Technology Exposition held in Beijing, on May 20, 2009. [Xinhua]
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Chinese staff show off an automatic-piloted minisize airplane at the 12th Beijing International Science and Technology Exposition held in Beijing, on May 20, 2009. [Xinhua]
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