常見例句A submersed Old World Plant(Hydrilla verticillata) having whorled,lance-shaped leaves and unisexual,solitary,axillary flowers. 軟水草一種生在水中的東半球植物（黑藻黑藻屬），葉片呈螺紋形、矛狀，雌雄異株，花為單生、腋生A submersed Old World Plant(Hydrilla verticillata)having whorled,lance - shaped leaves and unisexual,solitary,axillary flowers. 軟水草一種生在水中的東半球植物(黑藻黑藻屬)，葉片呈螺紋形、矛狀，雌雄異株，花為單生、腋生A submersed Old World Plant(Hydrilla verticillata) having whorled, lance-shaped leaves and unisexual, solitary, axillary flowers. 軟水草一種生在水中的東半球植物（黑藻黑藻屬），葉片呈螺紋形、矛狀，雌雄異株，花為單生、腋生Every seedling organs are of aerenchyma, etc.All of these characters are similar to Euryale ferox, Alisma orientale and Hydrilla verticillala. 種苗的各器官中均有發(fā)達的通氣組織等基本上與芡、澤瀉和黑藻相似。The results show as follows: (1) Elodea nattalii and Hydrilla verticillata have strong capacity of purification on nitrogen and phosphorus , etc. 在實驗室條件下.;對伊樂藻及輪葉黑藻凈化養(yǎng)魚污水的能力進行了比較研究。Relative analyses indicated that nutrition status of sediment is very important for the growth of Hydrilla verticillata. 相關(guān)分析表明，底質(zhì)營養(yǎng)狀況是影響黑藻生長的重要因素。 返回 hydrilla