service frequency的用法和樣例：
例句
- The voltages set up are of normal operating frequency.
由此引起的過(guò)電壓頻率通常為正常的工作頻率。 - Moreover, the numerical simulation indicates the mean gas temperature has more influence on the working frequency than the mean gas pressure and the length of regenerator.
數值模擬結果顯示，發(fā)動(dòng)機內氣體平均溫度較平均壓力和回熱器長(cháng)度對工作頻率的影響更大。
