Diadematacea
![](/Images/godic/202501/08/Echinothrix_diadema2950.JPG")
Diadematacia is a superorder of sea urchins. Unlike most other sea urchins, they generally have hollow spines. The tubercles on their test are perforated, and most species possess gills.
Diadematacea
/ˌdaiə'di:mətəsiə/
英汉-汉英词典
冠海胆总目
词组 | 习惯用语
您要查找的是不是：
- academician n. 学者；院士；大学教师；大学生；知识分子；学会会员
- demitasse n. 黑咖啡；小咖啡杯
- demarcate vt. 定…的界线;区分
- academical n. 大学制服
diadematacea n. 冠海胆总目
网络短语:
Diadematacea 冠海胆总目
英语百科
- Limestone hawksbeard
- limestone kiln
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- limestone landform
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- limestone oil
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- limestone pebble conglomerate
- limestone pellet
- limestone petrography
- limestone plant
- limestone powder
- Lime Stone powder
- Limestone Pt.
- limestone quarry
- limestone red loam
- limestone reef
- limestone reservoir rock
- limestone ripper
- limestone salamander