In the program, sand and synthetic resin are mixed in the spiral feeder and extrude out to the cloth.
首先，石英砂和合成树脂在螺旋给料器中混合，再由螺旋给料器挤出落进兜砂布中。
2
From the point of recycling of solid waste, this paper is to discuss the synthetic utilization of used sand and analyse the future.
从固体废弃物资源化的角度论述铸造旧砂的综合利用情况并分析其前景。
3
The addition of traces of Al could make the materials containing C ranged from 2.6-3.0% obtain troostite matrix both in sand molds and in metal, sand the materials have good synthetic properties.