AA：高级合金

在学术与科学领域，特别是化学相关研究中，术语“Advanced Alloy”常被缩写成AA，以提高书写与使用的效率。这种简写形式广泛应用于文献和技术交流中，其对应的中文含义为“高级合金”。

High entropy alloy is a kind of advanced alloy, which multiple elements are in the leading positions.
多主元高熵合金是一种新型的合金材料，是多种元素处于领导地位的合金。
The pedal of its bottom is made of advanced alloy, and the pole and rear-wheel cover are made of high strength steel tube, which looks quite beautiful and firm.
车底踏板采用高级合金(AA)制造，车杆和后轮盖（刹车）刹车采用高强度钢管制造，美观坚固。
Chromium is an important national strategic resource and chromate series products are important basic raw materials in chemical industries, light industries and advanced alloy materials manufacturing industries.
铬为国家重要战略性资源，铬盐系列产品是化工-轻工-高级合金(AA)材料的重要基础原料。
Current Development Situation of Spray Forming Process and Its Influence on Advanced Aluminum Alloy Industry
喷射成形工艺的发展现状及其对先进铝合金产业的影响
Composition Design on Advanced Aluminum Alloy for Semi-solid Process
新型半固态加工专用铝合金的成分设计

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