但是关键原件已经被乌克兰取走,研究结果可能会令俄罗斯难堪
A Missile Could Not Erase Russian Drone’s Embarrassing Stealth Secret
Russia tried to destroy the wreckage of its downed S-70 drone with a missile. But crucial evidence was recovered to reveal Russia's stealth technology — or lack of it.
www.forbes.com