“扩张器”的英语？

此外,还通过物理建模以及有限元方法研究了扩张器位置对电场分布的影响.And the expander position is studied using a physical model asas the finite boundary element method.目的: 探讨健康教育在皮肤扩张器注水期的作用.Objective : To explore the effects of health education for soft...