If invocations of operations from one partner occur, the partner link type must have one role.
如果是一个伙伴发生操作调用，则合作伙伴链接类型就必定只有一个角色。
In the Implementation property sheet of the partner link, click edit to edit the partner link type.
在合作链接的Implementation属性单中，单击Edit来编辑合作链接的类型。
If two partners are talking to each other, that is, both are invoking operations of their partner, the partner link type has two roles.
如果两个合作伙伴互相对话，也就是说，双方都调用各自伙伴的操作，此时伙伴链接类型就有两个角色。
A partner link type (see next section) further defines the partner link, and has a name which distinguishes it from other elements in the business process. It looks as follows.
伙伴链接类型(请参见下一部分)进一步定义了合作伙伴链接，并且有别于业务流程中其他元素的名称。
Therefore, WS-BPEL claims that only one request-response operation per process instance may be active at any given time for each port type, operation, correlation set, and partner link.
因此，WS-BPEL 要求，在任何给定时间，对于每个端口类型、操作、相关集和伙伴链接，每个流程实例只能有一个请求-响应操作。
Thus, a partner is really eventually just a typed service reference, where the typing comes from the service link type and the roles.
这样，伙伴实际上最后就是一个有类型的服务引用而已，其类型信息来自服务链接类型和角色。
The most important part of the partner description is the service link type; it is a mechanism used to tie the Partner description to the operations the partners can perform from the WSDL definition.
合作伙伴描述的最重要的部分是服务链接类型；它是一种机制，用来联系合作伙伴与合作伙伴可以执行的操作（根据WSDL 定义）。
The most important part of the partner description is the service link type; it is a mechanism used to tie the Partner description to the operations the partners can perform from the WSDL definition.
合作伙伴描述的最重要的部分是服务链接类型；它是一种机制，用来联系合作伙伴与合作伙伴可以执行的操作（根据WSDL 定义）。
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