字典網>> 英漢字典>> U開頭詞條>>unit-area acoustic impedance的意思 漢英字典unit-area acoustic impedance中文翻譯：【電】 單位面積聲阻抗 相關詞條：united nations food agriculture organization unit of account United States Information Agency unit conversion value unit data unitary operator United States district court unitary declaration unit number unit time