它在基于资源管理器的本地事务的边界方法之外提供了一个扩展的工作单元作用域。

It provides an extended unit-of-work scope beyond the method boundary for local transaction based resource managers.

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本地事务是组件需要在缺少有效的全局事务的情况下在扩展资源管理器本地事务(Resource Manager Local Transaction, RMLT)中操作的事务。

A local transaction is one in which the component needs to operate in an extended resource manager local transaction (RMLT) without a global transaction in effect.

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我们知道，一个Windows外壳扩展即是一个进程内的COM服务器，它在Windows资源管理器执行某种动作时装入内存——如显示上下文菜单。

As you know, a Windows shell extension is a COM in-process server that Windows Explorer loads when it is about to perform a certain action on a document-for example, displaying its context menu.

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