单词	low–frequency
释义	同low-frequency
随便看	fixed elevation fixed elevator fixed emplacement fixed end fixed-end beam fixed-end column fixed-ended grillage fixed end moment fixed-end moment fixed-end-point problem fixed end point variational problem fixed-end thrust fixed entry record fixed equipment fixed error fixed eruption fixed exchange rate fixed exchange rate system fixed excitation fixed expense fixed expense--fixed cost fixed expenses fixed factor fixed factors fixed failure number test