It decomposed the reliability function of complex system and mapped to performance index. Then, the performance index mapped to components and constructedtree modeling in turn.
它将复杂系统可靠性功能分解并映射到性能指标上，再将性能指标映射到部件上，依次构成树状模型。
2
This provides flexibility in the way the tree is constructed, but means it is your responsibility to "build out" the tree.
这在构造树的方式方面提供了灵活性，但是也意味着由您负责构造树。
3
In other words, this governs the shape and content of the parse tree that's constructed by the parser.