滚槽 roll-groove
如：
The Improvement and Application of the Structure Design for the Roll-Groove Die
滚槽模具结构设计的改进及应用
The structural design and working process of roll-groove die, as well as the improved die structure and its application are introduced.
介绍引进滚槽模具的结构设计及工作过程,以及改进后的模具结构及应用.
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