子组、断接子组和递归模式。
注意：断接子组仅在递归模式下发挥其功能。
NOTE: Breakout subgroup functionality only works in recursive mode.
例4：创建断接子组。
断接子组的名称是主组的名称后加上空格和数字。
The name of a breakout subgroup is the name of the main group, followed by a space and a number.
当处理很大以致需要断接子组的组时，这一点很重要。
This is important when working with groups that may be large enough to require breakout subgroups.
否则，可能会将断接子组中已经存在的某人添加到主组中。
Otherwise, you may add someone to the main group who's already in a breakout subgroup.
如前面例中所示，创建断接子组与创建普通子组没有任何不同。
There's no difference between creating a breakout subgroup and creating normal groups as in the previous example.
移动计算是一个新兴的领域，他的移动性和断接性是最主要的两个特点。
Mobile computing is a new emerging domain, the mobility and disconnection are his key characteristics.
作为普通子组与断接子组的例子，可以考虑两个组层次结构，如图1中所示。
As an example of normal versus breakout subgroups, consider the two hierarchies of groups shown in figure 1.
数据收集技术是指在断接前把用户将来可能访问的数据预先存储到本地缓存的一种技术。
Data hoarding technology means the technology of prefetching data which may access by user after disconnection later to cache.
当处理的组很大以致要分出断接子组的时候，应该为所有添加项指定这个选项，以避免重复。
When you work with groups that may be large enough to overflow into breakout subgroups, you should specify this option for all adds to avoid duplication.
当处理可能包含断接子组的很大的组时，使用 GROUP_RECURSE选项很重要。
When working with groups that may be large enough to contain breakout subgroups, it's important to use the GROUP_RECURSE option.
另一种删除组及其所有断接子组的方法是确定它们的名称并通过该名称像下面这样删除任何组。
Another way to delete a group and all of its breakout subgroups is to figure out which names they have and delete any group by that name like this.
而位置管理是移动计算中关系其移动断接特性的重要问题，也是移动数据库中的关键技术之一。
Location management is an important problem that relates with moving and disconnection in mobile computing. That is also one of key technologies of mobile database.
这是比较简单的编码，但是安全性比较差，因为不能绝对保证用户没有手工删除过一个断接子组，所以会漏删编号较大的组。
This is easier coding, but less safe because there's no absolute guarantee that someone may not have deleted one of the breakout subgroups manually, so you miss deleting higher-numbered groups.
数据收集是移动数据库中的一个关键问题，将数据收集到移动客户机的缓存中，使客户机在断接期间使用本地数据自主操作，提高了数据的可用性。
Data Hoarding is a key issue in mobile database. It will support the autonomy operation of mobile hosts when they are disconnected from servers by prefetching important data into local cache.
针对大型钢包台车发生的断轴事故，进行了负荷水平综合测试及接轴结构计算，提出了事故合理判断的依据及设计原则。
Introduces the load test and the structure calculation of the shaft in the case of broken-down accident. The design principle and the basis of the accident assessment are proposed.
方法：14例冠折上前牙用双重固化树脂粘接系统进行断端即刻再接修复，临床观察1年。
Methods: 14 fractured crown fragments of incisors were immediate reattached using dual-curing resin cement system.
方法：14例冠折上前牙用双重固化树脂粘接系统进行断端即刻再接修复，临床观察1年。
Methods: 14 fractured crown fragments of incisors were immediate reattached using dual-curing resin cement system.
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