看看这里怎么说：

https://3dprintingindustry.com/news/preparations-begun-on-mass-metal-3d-printing-of-airbus-engine-parts-50618/

“Now, in Germany, MTU Aero Engines will begin mass 3D printing nickel alloy borescope bosses for Airbus’s A320neo jetliner, as the company aims to reduce fuel consumption by 15% with new upgrades.”