查询词典 null

If this member is NULL, the system searches the icon resource

如果这个成员是空，系统会搜索其它的ICON

If this member is NULL, the system searches the icon resource specified by the hIcon member for an icon of the appropriate size to use as the small icon.

如果该值为 NULL 。则把 hCursor 中的图标转换成大小合适的小图标。

Act is null and illegitimate,from the mere fact that he who does it is out of his mind.

这样一种行为是不合法的、无效的，就只因为这样做的人已经丧

Then,the system is linearized by variational approach,the local null controllability is proved by applying a generalized implicit function theorem and combining the property of the solution mapping.

首先得到了系统的逼近能控性；然后采用变分方法对系统线性化，再结合解映射的性质，应用推广的隐函数定理，证明系统的局部零能控性；最后给出系统零能控的结论。

Then, the system is linearized by variational approach, the local null controllability is proved by applying a generalized implicit function theorem and combining the good property of the solution mapping.

首先通过对系统线性化，构造泛函，利用对偶方程，给出控制函数具体形式的办法得到系统的逼近能控性；然后采用变分方法对系统线性化，再结合解映射好的性质，应用推广的隐函数定理，证明系统的局部零能控性；最后利用局部零能控性和逼近能控性结合给出系统零能控的结论。

Anything we said 6 months ago is inadmissible in an argument. In fact, all comments become null and void after 7 Days.

任何一件我们争论了6个月的事，实际上，在开始7天之后，任何解释都变成无效的和没意义的。

In fact, any number of rows can include nulls for columns without NOT NULL constraints because nulls are not considered equal to anything.

由于空值与任何值比较都无意义，因此定义了 UNIQUE 键约束而没有定义 NOT NULL 约束的列上可以包含多行值为空的记录。

Bitmap indexes can include rows that have NULL values, unlike most other types of indexes.

与其他大多数索引不同，位图索引可以包含键值为 NULL 的行。

Bitmap indexes can include rows that have NULL values, unlike most other types of

与其他大多数索引不同，位图索引、可以包含键值为NULL的行。

Bitmap indexes include rows that have NULL values, unlike most other types of indexes. Indexing of nulls can be useful for some types of SQL statements, such as queries with the aggregate function COUNT.SELECT COUNT FROM employees

对于select count from tab，全表扫描比使用索引效率要高，经过分析的表cbo会倾向于使用索引，这是oracle软件的判断问题，最好还是不要收集统计信息，让oracle执行全表扫描。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。