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1. The graded filter system is designed to remove impurities from the water before it reaches thetap.
分级过滤器系统设计用来在水到达水龙头之前去除杂质。
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2. The engineer used a graded filter to improve the quality of the air in the factory.
工程师使用分级过滤器来提高工厂内空气质量。
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3. The graded filter can be adjusted to fit different types of media, making it versatile for variousapplications.
分级过滤器可以根据不同介质进行调整，使其适用于各种应用。