Results indicate that the preconditionmethod can capture shocks accurately, and inlet performance variations characteristics agree well with the theory results.
进气道性能随工作条件的变化规律，与理论分析一致。
2
Precondition tests are handled by before advice, which is executed just before the corresponding method execution join point.
前置条件测试由before建议处理，该建议就在对应的方法执行连接点之前执行。
3
Dividing road cell is the necessary precondition to develop road safety evaluation method.