The real reason why pilots spool up jet engines before taking off

The pause before takeoff is not hesitation, but a critical moment of engine verification and thrust stabilization.
来自MSN

Humanoid robot achieves controlled flight using jet engines and AI-powered systems

The Italian Institute of Technology (IIT) has reached a milestone in humanoid robotics by demonstrating the first flight of iRonCub3, the world's first jet-powered flying humanoid robot specifically ...