单词：structural heat transfer test
单词：structural heat transfer test 相关文章
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This is the VOA Special English Health Report. Doctors currently identify autism disorders by observing behavior. Autism affects social and communication skills. It usually first appears in young children. Now, researchers in the United States think
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A: Is this where I go to register for classes? B:This is it. A: I need to add a few classes. B: What classes would you like to add? A: I need to take some classes that will help me transfer. B: Have you finished any classes so far? A: This is my firs
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Broadcast: Feb 2, 2003 Officials of the U.S. space agency, NASA, probing the loss of the space shuttle Columbia are paying close attention to the orbiter's heat-resistant outer tiles, some of which ma
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