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一种草本植物

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Small genus of herbs of the eastern United States: white-topped asters .

美国东部草本植物的一个小属;绢果菊属的一种植物。

A field trial for plant density has been used for practical remediation in 2004 and 2005, it has four treatments, 10 cm×10 cm、20 cm×20 cm、10 cm×40 cm and 40 cm×40 cm, respectively. The results were follows: the optimization plant density was 20 cm×20 cm; Peteris vittata L. was a herbaceous plant fit to adequacy increased density for enhancing the biomass and removalling of arsenic; with increased the plant density, the plant were accumulated more proportion arsenic in their fronds, and then made promote the efficiency of arsenic removal from contaminated soils.(2) It was a complicated pyrolysis course for plant incineration.

1在10cm×10cm、20cm×20cm、10cm×40cm与40cm×40cm 4个种植密度下,利用蜈蚣草对砷污染土壤进行了2年的田间实际修复,得出如下结论:蜈蚣草是一种适宜于密植的草本植物,具有通过提高栽培密度来提高其地上部生物产量的潜力;同时蜈蚣草密植有利于促使其吸收的砷向地上部富集,从而有利于进一步提高其对砷污染土壤的修复能力;综合考虑修复过程中的收获方式、经济成本与可操作性,在4个密度处理中密度20cm×20cm为蜈蚣草的最佳栽培密度。

Grassy-leaved North American aquatic plant with yellow star-shaped blossoms.

北美的一种有禾草状叶的水生草本植物,具黄色星状花。

Prairie herb with solitary lilac-colored flowers.

一种龙胆科的草原草本植物,花淡紫色、单生。

A weedy, perennial herb native to Eurasia, having narrow leaves and racemes of showy, long-spurred yellow and orange flowers.

柳穿鱼一种如杂草般蔓生的多年生草本植物,产于欧亚大陆,长有狭长叶,开有绚丽的长花距的黄色和橙色花朵的总状花序

Mat-forming perennial found in cold springs of the eastern United States.

美国东部泉水中的一种弱小多年生草本植物,具不分裂的叶和小的荚果。

Mat-forming herb of Turkestan with nearly double orange-yellow flowers.

土耳其的一种成垫状的草本植物,花近重瓣、橙黄色。

An aromatic herb native to Eurasia, having finely dissected leaves and small yellow flowers clustered in umbels.

莳萝产于欧亚的一种芳香型草本植物,长有纤细分裂的叶子和成伞形花序的小黄花簇

A coarse annual herb introduced into North America from Siberia; dangerous to sheep and cattle on western rangelands because of its high oxalate content.

从西伯利亚引种到北美的一种粗糙的一年生草本植物;因为其具有高草酸盐,所以对美国西部牧场的牛羊有害。

Herb of northern Europe and Asia having erect racemes of red flowers.

欧洲北部和亚洲的一种开红花的草本植物,竖立的总状花序。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。