滚: Ⅰ动词1.(翻转; 滚动) roll; turn round; trundle 短语和例子打滚儿 turn a somersault; 滚进 roll-in; 满地乱滚 roll all over the ground; 滚铁环 trundle a hoop; 他滚了一个雪球。 he rolled a snowball. 球滚到桌子下面去了。 the ball rolled
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Abstract : there are lots of advantages by cold extrusion for straight knurlnut in a single process 文摘:直纹滚花螺母采用冷挤压一次成形新工艺，成效显著。
