字典網>> 英漢字典>> U開頭詞條>>upper tray的意思 漢英字典upper tray中文翻譯：上層紙盒【計】 上層紙盒 字典網 相關詞條：upper state symbol upper bound theorem upper pricision upper half-power frequency upper character upper urtate upper lift drum upper edge upper sideband upper uterine segment