Titanium alloys are important aeronautical material.

钛合金是重要的航空材料。

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LIU Y S, HAN P L. Development of laser additive manufacturing with metallic material and its application in aviation engines[J]. Aeronautical Manufacturing Technology, 2014, (1):62-67.

[5] 刘业胜，韩品连。 金属材料激光增材制造技术及在航空发动机上的应用[J]。航空制造技术， 2014， （1）：62-67。

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Scientists have been trying to find ways to control material properties for a long time, says Paul Lagace, an aeronautical and astronautical engineer at the Massachusetts Institute of Technology.

ECONOMIST: MONITOR