您要查找的是不是：
- My finding: Class C was a null set. 我的发现：等级C是一个空集。
- Set Null Sets the value to null if all foreign key columns for the table can accept null values. 设置空如果表的所有外键列都可接受空值,则将该值设置为空。
- The null set is any set subset. 空集是指不含任何元素的集合，空集是任何集合的子集。
- Note that this setting is independent of the nulls setting in the columns contained in the foreign key. 注意该设置与外键中所包含列的nulls设置无关。
- It is now our aim to set up a factory. 我们现在的目的是创办一座工厂。
- The state or quality of being null. 无效无效的状况或性质
- She had the sapphire set in a gold ring. 她把那枚蓝宝石镶在金戒指上了。
- The judgment set a new precedent. 那次判决树立了一个新的判例。
- A rival company has set afloat a new credit scheme. 一家竞争的公司已开始实施一项新的信用购物方案。
- The act of making null and void. 废除使 ... 作废和无效
- Setting up this business was a bit of a gamble. 开办这样的公司有点冒险。
- Twist the knob to the right setting. 把旋钮拧到适当的定位挡上。
- She bought a set of furniture on easy terms. 她以分期付款的方式买了一套家具。
- The printer can set this additional page in here. 这位印刷工把这额外的一页加在这里。
- A committee was set up to look into the workers' grievances. 成立了一个委员会来调查工人的不满。
- A very nice set of glasses came under the hammer yesterday. 昨天拍卖了一套很精致的玻璃杯。
- The contract was null and void because it was not signed. 这个合同无效，因为它尚未签字。
- I set a high value on his advice. 我认为他的忠告很有价值。
- The court ruled that the claim was null and void. 法庭裁决此项要求无效。
- A price of $1000 was set on the jewel thief's head. 悬赏1000美元抓住这个珠宝窃贼。
