用于VegaE上面级的M10液氧甲烷发动机成功完成340秒点火测试（4x）

https://twitter.com/i/status/1705160007862649336
原文： #Avio is proud to announce that the new LOX-CH Engine #M10 DM2 successfully completed a 340 secs continuous firing test. The new #VegaE’s upper stage engine performed as expected also changing multiple times LOX-CH mixture ratio. Video's speed is 4X #space #spaceiscloser