双频率的
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bifrequency radar seeker [航] 双频雷达导引头
Bifrequency System 双频制
bifrequency method 双频测听法
Bifrequency repeater 跨段通信
bifrequency driving 双频驱动
bifrequency regulator 双频斩波
bifrequency laser interferometer 双频激光干涉
Finally, the ways of improving activated efficiency of hematoporphyrin by a bifrequency ultrasound is pointed out.
指出了进一步提高复频超声激活血卟啉效率的途径。
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