字典網>> 英漢字典>> S開頭詞條>>second-time-around echo的意思 漢英字典second-time-around echo中文翻譯：【電】 第二次反射回波英文字典字典網相關詞條：secondary hyperplastic osteitis second-trip echo secondary meristem secondary cluster secondary nitro-compounds secondary mineral second degree murder secondary employment second lien second chamber