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。
The area of South China Sea is extensive, with busy shipping, bad climate, high frequence of accident, shortage of rescue force.
中国南海海域辽阔，航运繁忙，气候条件恶劣，事故发生频率高，海上救助力量不足。
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