钛合金 阿尔法和贝塔 贝塔之类的资源都是独立的吗

来源：蜘蛛抓取(WebSpider) 时间：2017-03-07 04:38 标签： 阿尔法收益和贝塔收益
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钛合金中βC合金指的是啥？
如题，刚入行的向大神求助，谢过了。
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