单词	燕聲
释义	燕聲 yàn shēng燕地的音樂。
随便看	periodic field beam focusing periodic-field beam focusing periodic field focusing periodic file periodic filling gas system periodic filter periodic fimction periodic flow periodic flow reactor periodic fluctuation periodic fluctuations periodic-flushing de-silting basin periodic focusing periodic-focusing channel periodic focusing field periodic focusing magnetic field Periodic-focusing magnetic field periodic force periodic-force periodic forcing function Periodic Formatted Report periodic formula periodic fouling periodic fraction periodic frame