Each event represents a change in state, and the ordered sum of all normal entity states represents a lifecycle.
每个事件代表状态中的一个变化，所有普通实体状态的有序和代表了一个生命周期。
2
We can make use of the event firing sequence to sum up and calculate the data.
我们可以使用事件序列来总结和估算数据。
3
By means of the exclusive sum of products of a fault tree, the improved method USES the basic event parameters direct in the synthetic evaluation and makes the fault tree kinetic analysis more simple.