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Scraper conveyor is the main conveying equipment in coal mine, has important affect to whole working face.
刮板输送机是煤矿生产的重要运输设备,对于整个工作面的安全生产起着至关重要的作用。
youdao
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Scraper conveyor is the main conveying equipment in coal mine, has important affect to whole working face.
刮板输送机是煤矿生产的重要运输设备,对于整个工作面的安全生产起着至关重要的作用。
youdao