1·The pure quartz lump becomes quartz tube via untouched technology of intermediate frequency induction heating.
采用中频感应加热无接触技术，将石英净坨拉制成为石英管。
2·Conventional dual up-conversion transmitter usually employs an intermediate frequency (IF) mixer and a radio frequency (RF) mixer to convert baseband user signal to IF and RF in sequence.
传统双上变频发射器通常采用中频(IF)混合器和射频(RF)混合器将基带用户信号依次转换成IF和RF。
3·Intermediate frequency instability has had the most uneven history.
中频不稳定性的研究经历了极为曲折的道路。
4·The system design method proposed by the paper examines the frequency tracking accuracy of the frequency agile radar synthesis detection unit at intermediate frequency.
本文提出了通过系统设计的方法将频率捷变雷达综合测试仪频率跟踪精度的检定在中频进行。
5·And the application in intermediate frequency digital receiver proves this software system's efficiency and dependability.
在中频数字接收系统中的应用验证了此软件系统的效率和可靠性。