Default values are used if there is no value set for the preference.
如果没有为Preference设定值，就会使用默认值。
There is no value in documenting requirements that won't be delivered.
对不能够被交付的需求进行归档是没有意义的。
We're told it has no value to us, and - so far - we've been stupid enough to believe it.
有人告诉我们这些信息毫无价值，而且迄今为止，我们还傻傻地相信这是真的。
If the solution fails to be delivered, the completed requirements document has yielded no value.
如果解决方案发布失败，已经被完成的需求文档没有产生任何价值。
Note that the $verbose parameter for dbconnect() defaults to FALSE if no value has been specified.
注意，如果没有为dbconnect() 的 $verbose参数指定任何值，则使用默认值FALSE。
For both types, you can specify a length parameter, which defaults to 1 if no value is specified.
对于这两种类型，都可以指定length参数，如果没指定，默认为1。
But no matter what its price, a work has no value unless it is seen; unfound masterpieces are worthless.
然而，不管定价如何，如果人们看不到，作品就毫无价值。没被发现的杰作一钱不值。
You can see that there is no value in studying inner shell electrons to ask questions about bonding.
你应该了解考虑成键时，去考虑内层电子，是毫无意义的。
If it's sitting in a box in your garage, there's no income potential because no value is being delivered.
如果它被塞在你车库的一个箱子里，就没有产生收入的可能，因为没有任何价值被传递出去。
This is different from using the empty string, which indicates that the property exists but has no value.
这与使用空字符串不同，空字符串表示属性存在但是没有值。
The South Sea Company had no real business so its shares had no value, save for the cash raised by their issue.
南海公司没有实际的业务，除去发行募集来的现金，其股票没有价值。
The tool is designed to make a process easier; if you don't follow that process, the tool will have no value for you.
工具的设计是为了使过程变得容易；如果你不遵从那个过程，那么工具对你来说是没有价值的。
A code block is simply a block of code that returns a value, and if no value is returned then a NULL object is returned.
代码块就是将返回一个值的一组代码，如果没有返回值，那么会返回一个NULL对象。
The cell type is a simple element that can contain a range of values from 1 to 9 and a period (.) that represents no value.
单元格类型是一个简单的元素，其中可以包含1到9 的值和点号（.） ，点号表示没有值。
The first one creates an integer object whose value is 0, which is the default value used when no value is supplied to the int class constructor.
第一个构造函数创建了一个整数对象，其值为0，在没有值提供给int类构造函数的情况下，该值是所使用的默认值。
If no value or NULL is specified for this argument, it will first look for explain tables under current authorization ID, then under SYSTOOLS schema.
如果这个参数不指定值或者指定为NULL，那么它首先会查找当前授权ID下的解释表，然后再在SYSTOOLS模式下查找。
Describing the changes to the files necessary to refactor the Blether code would add no value to this article, as the IDE takes care of them for you.
描述重构Blether代码所需的文件更改对于本文来说没有任何价值，因为IDE会为您料理这一切。
This has no value from a security perspective and in fact slightly increases risks, but does make it possible to use operating system level accounting.
这从安全性的角度来看没有价值，而且实际上会略微增加风险，但是有可能使用操作系统级审计。
If no value or NULL is specified for this argument, it will first look for explain tables under current authorization ID then under the SYSTOOLS schema.
如果这个参数没有指定值或者指定为NULL，那么它首先会查找当前授权ID下的解释表，然后再在SYSTOOLS模式下查找。
Since there was no value automatically detected for the display environment variable, the X client has no idea which server will do the displaying for it.
由于没有自动检测到DISPLAY环境变量的值，所以X客户机不知道哪个服务器将为它提供显示。
As a result you get a headache from the noise, you get no value from the magazine and you get upset at your kids because they start whining and complaining.
这样做的结果是，你不仅被噪音吵得头痛，也没能从杂志中获取任何有用的信息，最后还会因为孩子们的抱怨和不满而郁闷。
That is, the token is to be replaced with a value associated with the name of the variable; or, if no value as been defined, with either the default value or an empty string.
也就是说，该标记将会被与变量名关联的值替换；如果没有定义关联值，那么就会替换为默认值或空字符串。
Since this query contains no value predicate to restrict either the books or the authors table, DB2 has to perform a table scan on either of the two tables to read all author IDs.
由于该查询没有包含用来限制books或authors表的值谓词，因此DB 2必须在两个表上执行表扫描，以便读取所有author ID。
A general, good practice is not to allow null (that is, no value) columns in a relational database, because when you attempt to read such a column, you get a null value exception.
通常，一种优秀的实践就是不要在关系数据库中使用null(即没有值)列，因为当您试图读取这类列时，您将得到一个null值异常。
Node types are returned as integers, and allow you to handle each node appropriately; an element (type 1) has a name, but no value, whereas a text node (type 3) has a value but no name.
节点类型以整数返回，并且允许您适当地处理每一个节点；一个元素(类型1)有名称没有值，但是一个文本节点(类型3)有值没有名称。
Node types are returned as integers, and allow you to handle each node appropriately; an element (type 1) has a name, but no value, whereas a text node (type 3) has a value but no name.
节点类型以整数返回，并且允许您适当地处理每一个节点；一个元素(类型1)有名称没有值，但是一个文本节点(类型3)有值没有名称。
应用推荐