词汇	Call toll-free
释义	Call toll-free. 打免费电话。
随便看	output coupling device output coupling factor output coupling lose output coupling mirror output coupling terms output cross correlation theorem outputcurrent output current output current capability output current capacity output current characteristics output current distortion output current limit output-current limitation output current mismatch output current of rectifier module output current rating output-current rating output current rating of rectifier output current stability output cursor output curve output cutoff frequency output cylinder outputdata