研究了复杂可编程逻辑器件(CPLD)在超声波流量测量系统中的应用。
The application of CPLD (complex programmable logic device) in ultrasonic flow measurement system is researched.
研究了产生超声波的机理及器件性能，分析了超声源驱动电路的组成和工作原理。
Studied the mechanism of how to produce ultrasonic and the functions of the machine, analyzed the ultrasonic driven circuit and its principle of working.
随着超声波塑料焊接技术在各行业被广泛应用，焊接系统中的重要器件——矩形焊接模具也受到了广泛的使用。
With the ultrasonic plastic welding technology is widely used in various industries, an important device in the system - rectangular welding mold has also been widely used.
采用油作为加热介质对焊锡进行加热，再通过超声波振动去除电路板上的焊锡，从而把电路板上的元器件拆卸下来。
Using oil as heating medium to heat soldering tin, then disassemble it by ultrasonic vibration and consequently disassemble the PCB's components.
分析压电式超声波换能器的等效电路，并由等效电路输入阻抗的导纳圆图确定了换能器的元器件参数以及谐振频率、机械品质因数和工作带宽等特征参量。
The device parameter as well as resonance frequency, mechanical quality factor and work band width were determined by the equivalent circuit input impedance admittance circle diagram.
分析压电式超声波换能器的等效电路，并由等效电路输入阻抗的导纳圆图确定了换能器的元器件参数以及谐振频率、机械品质因数和工作带宽等特征参量。
The device parameter as well as resonance frequency, mechanical quality factor and work band width were determined by the equivalent circuit input impedance admittance circle diagram.
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