turbine expansion engine

基本解释

The one-level turbine engine with one pump is composed of a turbine, a turbine shaft, a booster pump wheel and an expansion chamber shell.
一泵一级涡轮发动机由涡轮、涡轮轴、增压泵轮和膨胀室壳体组成。
ip.com
The divided-flow two-level turbine engine with two pumps is composed of a turbine, a turbine shaft, a two-level booster pump wheel, a guide pulley and the expansion chamber shell.
分流式两泵两级涡轮发动机由两级涡轮、涡轮轴、两级增压泵轮、导轮和膨胀室壳体组成。
ip.com
In turbofan engine's design, the structure with a large meridional expansion was used between HP and LP turbine, and this structure has brought the difficulty for the low pressure turbine design.
在涡扇发动机的设计中，高低压涡轮过渡段处多采用较大子午扩张的结构，此结构给低压涡轮设计带来了难度。