center-axle drive scraper [建] 中轴驱动式铲运机
center and rear-axle drive scraper 中
center driving half-bridge sludge scraper 中心传动辐流式吸泥机
But after, the scraper conveyer has carried on the overall structural design to center simple chain.
而后，对中单链型刮板输送机进行了总体结构设计。
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