渐伸线 meaning in Chinese

[数学] involute; evolvent

As a result of our successful development of this material , we are now able to provide a titanium alloy at low cost that has a good surface skin and is produced not by the conventional diecast wire drawing method but by an original roll method
从客户对材料的轻量化，高强度的需求中着手开发可以冷间锻造的高强度钛合金，并非是以前的渐伸线法，而是根据特殊的辊压加工方法，利用低成本就可以提供表面肌优良的钛合金材料。