低中高表盘(蓝色)与一个引入FREQ控制(淡蓝色每个配对)，允许你选择的频率提高或降低。
High Mid and low Mid dials (blue) are each paired with a freq control (lighter blue) that allows you to select the frequency boosted or cut.
合理选择采样频率是设计实时数字控制系统遇到的实际问题。
How to select sampling frequency reasonably is an actual problem in designing the real time digital control system.
为了保证疗效，在微波治疗技术中还必须引入测温技术、自动控制技术并选择合适的微波工作频率。
In order to guarantee the curative effect, it is a must to introduce the temperature measuring technology, automatic control technology and choose appropriate microwave working frequency.
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