协调器发送一个ZDO解除绑定请求给第一个设备。
我们需要解除绑定的事件侦听器在指示当角开始破坏？
Do we need to unbind event listeners in directives when angular starts to destroy?
如果是，servlet通知会话中绑定或者解除绑定的对象。
If it does, the servlet notifies the object that it has been bound to or unbound from the session.
终端设备绑定是一个切换过程，所以解除绑定请求需要发送给第一个设备，以便移除一个已有的绑定条目。
The End Device Bind is toggle process, so the unbind is sent first to remove an existing bind entry.
当应用程序使用LDAP服务器进行身份验证时，它通常使用绑定来与服务器通信，而通过解除与服务器的绑定来关闭连接。
When an application USES the LDAP server for authentication, it generally USES the binding to communicate with the server, and unbinding from the server to close the connection.
如果在本地绑定了某些数据，然后又解除了该绑定，这时WPFdesigner会报告一个错误消息：‘System . Windows .Data .Binding’不是一个合法的属性值。
If some data is bound locally, and then the data binding is cleared, WPF designer reports an error message 'System.Windows.Data.Binding' is not a valid value for property.
Xerces在内部将这类属性绑定到一个名称空间，因此在将名称空间声明作为属性报告给应用程序之前，解析器必须从属性所在的名称空间中解除对这类属性的绑定。
Internally, Xerces binds these attributes to a namespace, so before reporting namespace declarations to your application as attributes, the parser must unbind them from their namespace.
使session无效，解除所有对象的绑定。
Invalidates this session then unbinds any objects bound to it.
使session无效，解除所有对象的绑定。
Invalidates this session then unbinds any objects bound to it.
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