concentric layers meaning in English
同心层
Examples
- The stem is reduced to a disklike structure , bearing concentric layers of fleshy leaf bases that comprise the food store
由许多肥厚的肉质鳞叶包围扁平或圆盘状的地下茎，其中储藏着大量的营养物质。 - No gemstone is more creatively striped by nature than agate , chalcedony quartz that forms in concentric layers in a wide variety of colours and textures
同心层状不规则纹带或缠丝构造的隐晶质块体石英