Its " muscles " are three flat - plate piezoelectric actuators pieces of metal that bend when electricity runs through them “臂力”是三个扁平的压电启动器当电流通过它时金属板弯曲。
2.
Its " muscles " are three flat - plate piezoelectric actuators ? pieces of metal that bend when electricity runs through them “臂力”是三个扁平的压电启动器当电流通过它时金属板弯曲。