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黑藻 [hēi zǎo]
hydrilla
- 相关分析表明，底质营养状况是影响黑藻生长的重要因素。
Relative analyses indicated that nutrition status of sediment is very important for the growth of Hydrilla verticillata. - 黑垫子是由池塘水、藻花、自制碳、烟灰、和玻璃样碳组成（燃烧的灰烬）。
The black mat was formed by ponding of water and algal blooms and contains carbon, soot and glassy carbon—remnants of burned materials. - 种苗的各器官中均有发达的通气组织等基本上与芡、泽泻和黑藻相似。
Every seedling organs are of aerenchyma, etc. All of these characters are similar to Euryale ferox, Alisma orientale and Hydrilla verticillata.
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