Due to the limitation of frequency resources, the contradiction between network capacity and the growth of traffic is conspicuous.
由于受到网络频率资源的限制，网络容量与话务量增长之间的矛盾日益突出。
In view of the limitation of safety and efficiency of current water-heater, the basic structure and principle of a supersonic-frequency induction water-heater are introduced.
针对目前热水器的安全，效率等局限性，本文介绍了一种超音频感应加热热水器的基本结构和原理。
For the limitation of the accuracy of IFM technology, the frequency tracking accuracy can't be examined directly.
由于现有瞬时测频技术精度的限制，无法直接对其频率跟踪精度进行检定。
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