单词stage-driver
To obtain higher luminous efficiency and better light changing effect, a three-stage driver circuit of LED was designed.
为了获得较高的发光效率和调光效果，设计了一个三级结构的LED驱动调光电路。
Experimental Study on Piezoelectric Pre-Stage Driver of Electro-Hydraulic Servo Valves
压电驱动型电液伺服阀前置级驱动器实验研究