足部在其接合表面处具有轴向长度。
The foot portion at its engagement surface has an axial length.
内足部在其接合表面处具有轴向长度。
The inner foot portion at its engagement surface has an axial length.
列举出分离接合、有效输出长度、梳理功能、牵伸效能等方面的主要技术改进并加以分析比较。
The main technical improvements such as detaching & overlapping, effective length of delivery, combing function and drawing function etc. are given out and also made comparison analysis.
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