短語詞組短語secondary alarm circuit 輔助報警回路secondary voltage circuit 二次電壓回路secondary electrical circuit 電氣二次系統(tǒng)secondary controlling circuit 二次控制回路secondary electric circuit 電氣二次回路secondary invert circuit 二次逆變電路secondary voltage circuit fault 二次電壓回路故障secondary ignition circuit 次級點火電路secondary cooling circuit 二次冷卻回路 返回 secondary circuit