离心地;
The blades at its periphery throw off air centrifugally in a direction following the rotation.
轮周叶片将空气沿着转动方向抛离轴心.
The defects of alloy steel pipe centrifugally cased are drawn. Their causes and preventives are analysed.
归纳出离心铸造合金钢管常出现的缺陷,并分析其产生原因,从而防止缺陷产生.
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