derivation tree
[] 推树, 派树, 树

1. In the paper, the methods of both minimum distance and maximum tree derivation are used to classify the trend networks of overseas tourists to the main tourist cities in China, and make correlative
   文使距聚树模糊聚旅游热点市海旅游流流动网络,做点性。
2. A parse of a sentential form is the construction of a derivation and possibly a syntax tree for it.
   句型某推(许其语树)造程。