美[?du:?l] 1 . his dual role as composer and conductor
他兼任作曲家和指揮的雙重角色
來(lái)自《權(quán)威詞典》
2 . He has dual role as composer and conductor.
他兼作曲家及指揮的雙重身分.
來(lái)自《簡(jiǎn)明英漢詞典》
3 . The airplane had dual controls.
這架飛機(jī)有兩套操縱裝置.
來(lái)自《現(xiàn)代漢英綜合大詞典》
4 . The reason for the discount is the use of dual - class shares.
存在折價(jià)率問(wèn)題的原因是雙重投票權(quán)股票(dual-classshares )的使用.
來(lái)自互聯(lián)網(wǎng)
5 . A safety alert system by DTMF ( Dual - tone multifrequency ) mode is introduced.
介紹一種采用DTMF ( Dual-ToneMultifreqency ) 信號(hào)方式通信的安全報(bào)警系統(tǒng).
來(lái)自互聯(lián)網(wǎng)
1.consisting of or involving two parts or components usually in pairs;
an egg with a double yolk
2.having more than one decidedly dissimilar aspects or qualities;
a double (or dual) role for an actor
3.a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural);
ancient Greek had the dual form but it has merged with the plural form in modern Greek
DUAL：Diffusing Update Algorithm ,彌散更新算法。EIGRP組件之一。dual是Oracle與數(shù)據(jù)字典一起自動(dòng)創(chuàng)建的一個(gè)虛擬表﹐它只有一列﹕DUMMY﹐其數(shù)據(jù)類(lèi)型為﹕VARCHAR2(1)。dual中只有一行數(shù)據(jù)﹕ 'X '。dual屬于sys模式﹐但所有用戶都可以使用dual名稱(chēng)訪問(wèn)它﹐用SELECT計(jì)算常量表達(dá)式﹑偽列等值時(shí)常用該表﹐因?yàn)樗环祷匾恍袛?shù)據(jù)﹐而使用其它表時(shí)可能返回多個(gè)數(shù)據(jù)行。用來(lái)查那些不屬于實(shí)際表里的內(nèi)容，有時(shí)也用來(lái)檢查某表某條件的記錄
