=decibels referred to one-kilowatt 千瓦分贝(以1千瓦为零电平的分贝)
英 ['diːb'iːk'eɪ] 英 ['diːb'iːk'eɪ] 美 ['diːb'iːk'eɪ] 美 ['diːb'iːk'eɪ]