名词
中文翻译：逆流式沙分选机
同义词：
['counterflow classifier', 'counterflow separator']
例句：
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1. The counterflow sand classifier is used to separate the fine and coarse particles in the sand.
逆流式沙分选机用于分离沙子中的细粒和粗粒。
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2. The counterflow sand classifier is an essential tool for mineral processing.
逆流式沙分选机是矿物加工中必不可少的工具。
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3. The counterflow sand classifier has been widely used in the mining industry for its high efficiency and low energy consumption.
逆流式沙分选机在矿业中得到了广泛的应用，因其高效率和低能耗而备受青睐。