impeller ramming 动叶轮摔砂...jolt ramming 震捣...ramming head 摔砂头...pneumatic ramming 气动捣砂...hand ramming 手工捣砂...vibration ramming 振动捣砂...hard ramming 重捣砂...silica ramming compound 硅砂捣料...ramming compound 捣成用料...ramming plate 造模板...squeeze ramming 压挤捣砂...degree of ramming 捣紧度,捶紧度...
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