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。

In the program, sand and synthetic resin are mixed in the spiral feeder and extrude out to the cloth.

youdao

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。

In the program, sand and synthetic resin are mixed in the spiral feeder and extrude out to the cloth.

youdao