ds high frequence region 沙尘暴多发区
high frequence ultrasound 高频超声
High-Frequence ceramic capacitor 高频陶瓷电容
high frequence upset welding 高频电阻焊
high frequence recombination 高频重组菌株
High-frequence PCB 高频印制电路板
Diopside rock is a functional raw material for high frequence porcelain.
透辉石矿是高频瓷的一种实用原料。
Studying the craft and design of the PCB in high frequence signal system.
研究了高频电子印刷板的设计原理，并掌握了制作工艺。
For digital signal of low frequence, using opto - coupled isolator is simpler, but, for digital signal of intermediate or high frequence, the signal will be aberrant.
对于低频数字信号，光电耦合器件应用起来比较简单，但对于中高频数字信号，会使信号产生畸变。
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