两个一组的 meaning in English

diad

What s more , the pattern also provides a useful way to abstract away the details of the differences between local and remote interfaces in ejb 2 . 0 - rather than having to make your application programmers explicitly pick which home interface remote or local and which of the local or remote interface to use , you can abstract that detail away by hiding the decision behind a set of two business delegates
而且，该模式还提供了一种有用的方法来抽象出ejb 2 . 0中本地接口和远程接口之间的差别，而不必让您的应用程序设计人员显式地挑选使用哪一种主接口（远程还是本地）和本地或远程接口中的哪一个，您可以通过将决定隐藏在两个一组的业务代表的背后来抽象出细节。