Her French is improving by leaps and bounds.她的法语进步非常快.Their business has grown by leaps and bounds.他们的生意突飞猛进.The total number of species on the planet appears to be growing by leaps and bounds.地球上的物种数目似乎正飞速增长。...
However, the modulation - demodulation of ultraviolet and voice transmission are the key technologies.然而, 紫外光通信的 调制解调技术 以及语音传输是整个系统的关键难点.Introduce and analyze the key module of demodulation technologies, for example NCO ...