Once the expression is in this state, it is ready for the next two steps: expression checking and evaluation.
表达式一旦处于这种状态，就为下面两步做好了准备：表达式检查和求值。
Self evaluation, conducted by the individual raising the concern, is accomplished through the procedural steps requesting two practices and sources before raising an issue.
由个体引导的对关注事件的自我评估，通过在提出问题前要求两项实践和消息来源的程序步骤来实现。
The concepts, measure standards, evaluation methods and steps of missile weapon system are expounded, and two effectiveness evaluation models are established.
阐述了导弹武器系统作战效能的概念、量度准则、评定方法和步骤，并推导了常见的两种效能评估模型。
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