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1.The semi-automatic premilling machine is an essential tool for grinding materials.
半自动预磨机是研磨材料的重要工具。
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2.The engineer used the semi-automatic premilling machine to produce high-quality parts.
工程师使用半自动预磨机生产高质量的零件。
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3. The semi-automatic premilling machine has greatly improved the efficiency of material processing.
半自动预磨机大大提高了材料加工的效率。