convergent divergent nozzle的用法和樣例：
例句
- Making use of these results, we obtained an exact solution for the incompressible potential flow through a two-dimensional Laval nozzle.
利用這些結果得到了二元拉伐爾噴管內不可壓縮位勢流動的精確解。 - Two types of solid micro-thruster structure won designed based on MEMS technique, one of which with discrete and abnormal laval nozzle.
摘要設計了兩種基於微光機電技術的固體微推力器結構，其中一種結構具有不連續的非正常拉瓦爾噴管。
