例句與造句

1. If a set contains no elements we shall designate it by Ф and define it as the empty or null set .
   如果一個(gè)集合不包含元素，我們就把它記為，且定義它為空集或零集。
2. Set null sets the value to null if all foreign key columns for the table can accept null values
   設(shè)置空如果表的所有外鍵列都可接受空值，則將該值設(shè)置為空。
3. If an update to a row violates a constraint or rule , violates the null setting for the column , or the new value is an incompatible data type , the statement is canceled , an error is returned , and no records are updated
   如果對(duì)行的更新違反了某個(gè)約束或規(guī)則，或違反了對(duì)列的null設(shè)置，或者新值是不兼容的數(shù)據(jù)類(lèi)型，則取消該語(yǔ)句、返回錯(cuò)誤并且不更新任何記錄。
4. The practice proved uses the hot tubular real null set to be hot the solar energy air conditioning technology plan which and the absorption type refrigerator unifies is successful , it opened a new application domain for the solar energy light heat utilization technology
   實(shí)踐證明采用熱管式真空集熱器與吸收式制冷機(jī)相結(jié)合的太陽(yáng)能空調(diào)技術(shù)方案是成功的，它為太陽(yáng)能光熱利用技術(shù)開(kāi)辟了一個(gè)新的應(yīng)用領(lǐng)域。
5. It's difficult to find null set in a sentence. 用null set造句挺難的