国外用于采煤工作面的刮板输送机的发展趋势是加大驱动功率。
The development trend of scraper conveyor used at working face of underground coal mine overseas is to have greater driving power.
国外用于采煤工作面的刮板输送机的发展趋势是加大驱动功率。
The development trend of scraper conveyor used at working face of underground coal mine overseas is to have greater driving power.
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