Taking acid-treated stellerite as main material, zeolite X powder was prepared by hydrothermal method.
以酸处理红辉沸石原,采法制备了X型沸石粉体。
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These scientists think they'll be able to stop nitrogen oxides before they reach the atmosphere by running the car exhaust past the superacid first.
科学家们认为尾气前过超强酸处理能阻止氮氧化物。
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