retraction ring
英 [rɪˈtrækʃn rɪŋ]
美 [rɪˈtrækʃn rɪŋ]
网络 收缩环
双语例句
- Topological transformation of the smooth epidermis in the form of evolution in general can be summarized as the following six kinds of epidermal ways: wrapped, the protrusion retraction, shift ring, within the extension, curl and spall.
在拓扑变换中，光滑表皮的形态演化总体来说可用以下八种表皮发生方式概括：包裹、外突、内陷、内移、环化、内延、卷曲、层裂。