步进顺序控制是可编程序控制器的优势功能，编制步进顺序控制程序的有效方法是画出功能表图。
The advantage function in PLC is stepping sequence control, the efficiency method of establishment the stepping sequence control program is drawing out the function diagram.
在总结研究现状的基础上，以应用举例的方式提出一种从描述系统用例间顺序依赖关系的活动图和用例实现的活动图中获取系统功能测试线索的方法。
Based on summarizing status of these researches, a method on how to derive test scenarios from the activity diagram of the actor is described that represents use case sequential dependencies and acti.
在总结研究现状的基础上，以应用举例的方式提出一种从描述系统用例间顺序依赖关系的活动图和用例实现的活动图中获取系统功能测试线索的方法。
Based on summarizing status of these researches, a method on how to derive test scenarios from the activity diagram of the actor is described that represents use case sequential dependencies and acti.
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