acrylic sphere 丙烯酸塑料小球; 聚丙烯球..
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acrylic sphere 丙烯酸塑料小球; 聚丙烯球...
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acrylic c sphere 丙烯酸塑料小球
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The heavy water is held in an acrylic sphere, and is surrounded by a network of nearly 10, 000 photomultiplier tubes.
ECONOMIST: The news that neutrinos have mass is both good and bad
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