单词	偶见的--偶发的
释义	偶发的；偶见的occasional
随便看	sigma amplifier sigma bond sigma bus sigma center information storage and retrieval system sigma center information storage and retrieval system，scisrs sigma circuit sigma coordinates sigma coordinate system sigma delta chi sigma-delta converters sigma delta converters and filters sigma-delta modulation sigma-delta modulator sigma-delta quantized tap coefficients sigma factor sigma field sigma field (σ-field) sigma finite sigma-finite sigma-finite (σ-finite) sigma function sigma function -- σ-function sigma function ; σ-function sigma gas calorimeter sigmagraptus