frenquently
frenquently-
Vapor explosion of LPG happen frenquently during its storage and transportation , and the consequent damages are usually large .
液化石油气蒸气爆炸是其储运过程中较易发生且危害极大的一种热力过程。
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With the shortage of radio spectral resource getting exiguouser day by day and the radio interferences occurs so frenquently , the radio spectral monitor gets more and more important .
随着无线电频谱资源日趋紧张和无线电干扰事件不断增多，对无线电信号的频谱监测日益重要。