To unset a variable, use unset.
使用unset取消变量。
Substituting for null or unset variables.
替换空变量或未设置的变量。
Unset alter mode on the replicated tables.
关闭复制表上的alter模式。
After attaching the fragments, unset alter mode.
附加片段之后，取消alter模式。
The unset values have no corresponding element in the file.
未设置的值在文件中没有任何对应的元素。
Note that unset properties are not copied, nor are read-only properties.
请注意，未设定的属性不会复制，唯读属性也不会复制。
Gnuplot has a consistent way to undo sets: in gnuplot 4.0, the command is unset.
gnuplot有一种撤销设置的统一方法：在gnuplot 4.0中，命令是unset。
Nounset: If substituting, all unset parameters will be returned as an error.
nounset：如果执行替换，则所有未设置参数都作为错误返回。
Use the cdr alter --off command to unset alter mode on the replicated table.
使用cdralter --off命令关闭复制表的 alter模式。
This is because T2zos requires the rowset support to have a default of false or unset.
这是因为T2zos需要行集支持来获得默认的false或unset。
Using the CDR command line interface, unset the replication table from alter mode.
使用CDR命令行界面，关闭复制表的alter模式。
The reason that DS calls the set before the unset is to maintain continuity of the service.
DS在unset之前调用set的原因是维持服务持续性。
If not in silent mode, these errors cause a diagnostic error message and OPTARG is unset.
如果不是在静默模式，则这些错误将导致一条诊断错误消息而OPTARG不会被设置。
Doctors describe the brains of very young babies as having the consistency of unset gelatin.
据医生描述，新生婴儿的大脑中有粘稠的未凝胶状物质。
In the Bash shell, for example, -u ensures that any unset variables are treated as an error.
例如，在Bash外壳中，- u可确保将任何未设置的变量作为错误处理。
It's also why the unset method takes an argument, rather than just setting the service to null.
这也就是为什么unset方法还带个参数，而不是把服务设置为null的原因。
The 'Unassigned' check box allows you to query for uninitialized or unset fields of a work item.
“Unassigned”复选框允许您查询工作物件的未初始化或未设置的字段。
If the foamed material comprises a thermoplastic, the foamed material is unset or partially set.
如果所述发泡的材料包含热塑性材料，则所述发泡的材料不经凝固或经部分凝固。
In fact, just setting extend size to 0 will unset the extendable flag for all chunks in that space.
事实上，仅仅将扩展大小设置为0会为该空间中的所有块消除可扩展标志。
If the variable is empty or unset, the given default value is printed instead. Default takes one argument.
当变量为空或者未分配的时候，将由给定的默认值替代输出。
New option to set stereotypes from the context menu makes it easier to set or unset stereotypes (Figure 10).
从菜单中设置模板的新选项，使得设置模板变得更加容易(图10)。
If an unset variable can't produce a valid result, check for the variable and throw an InvalidArgumentException.
如果未设置的变量无法生成有效的结果，请检查变量并抛出InvalidArgumentException。
Because the desc attribute doesn't match the attribute named description, the value is not copied and the value is left unset.
因为desc属性不匹配名为description的属性，所以未复制并且未设置该值。
Finally, we probably want to enable the deletion of a contact, or contact's address in the edit page, again implemented using unset.
最后，我们可能还希望能够删除编辑页中的联系人或联系人的地址，这一点还可以通过取消设置来实现。
But with SECURE_NOROOT unset, a root process having dropped some capabilities can simply execute another program to regain its capabilities.
但是，如果没有设置SECURE_NOROOT，那么一个已经放弃一些能力的根进程只需执行另一个程序，就能够恢复它的能力。
This may be due to an unset Orientation property for the axis or a type mismatch between the values being plotted and those supported by the axis.
这可能是因为轴线的一个未设置的Orientation特性或者所标绘的值与轴线支持的值之间存在类型不匹配。
You can "unset" the kernel configuration option CONFIG_MODULE_UNLOAD to remove a considerable amount of kernel functionality related to module unloads.
您可以“取消”内核配置选项CONFIG_MODULE_UNLOAD，删除大量与卸载模块相关的内核功能。
For example, unset on an item in a list will cause the indices of all subsequent items to be shuffled up; there are no holes allowed in the set of indices.
例如，在列表中的一个项目上使用unset将打乱所有后续项目的索引，索引集中不允许存在任何中断。
If a call came in as the service was being replaced, and the unset was called first, there would be a chance that the shorten service could be null transiently.
如果替换服务时先调用unset,shorten服务就有可能短暂为null。
This is used to set a default value for a variable. If the variable is empty or unset, the given default value is printed instead. Default takes one argument.
此函式用在设定变数的预设值，如果变数的值是空白或尚未设定的话，则会列印出预设值，使用此函式时会预设需要一个参数。
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