组件需处理类似事件以通知用户程序，并且做适当的日志以便促进排除故障和服务监测。
Components are required to handle such events to notify client programs and also do appropriate logging to help facilitate troubleshooting and service monitoring.
越多的复杂度和分层被涉及到，就越难以为一个应用程序排除故障。
The more complexity and layers that are involved, the more difficult it is to troubleshoot an application.
当为Web应用程序排除故障，特别是像这里那样查看变量时，JS p调试器极为有用。
The JSP debugger can be extremely useful when troubleshooting Web applications, and in particular in examining variables as shown here.
日本名厂电脑程序控制器，操作简单，工作稳定。控制和监视整机工作状况，能迅速排除故障；
Programmable logic controller is from famous Japanese maker with easy operation and stable performance. It controls and monitors working status of the machine and can clear trouble immediately.
日本名厂电脑程序控制器，操作简单，工作稳定。控制和监视整机工作状况，能迅速排除故障；
Programmable logic controller is from famous Japanese maker with easy operation and stable performance. It controls and monitors working status of the machine and can clear trouble immediately.
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