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Any of various tropical American evergreen trees of the genus Swietenia, valued for their hard, reddish-brown wood .

桃花心木任一种属于桃花心木属的美洲热带常绿树木,其坚硬、红棕色木材极富价值

Meso phanerophytes and micro phanerophytes are main composing plant of arbor synusia in the area.In synusia structure,except for the warm shrubs,frost flora all have arbor synusia,shrub synusia,herbage synusia and lichen synusia.The evergreen broad leaved meso phanerophytessynusia dominates the arbor layer .

在层片结构上,森林植物群落除暖性灌丛外,都具有乔木层层片、灌木层层片、草本层层片和苔藓地被层层片,常绿阔叶中高位芽层片为乔木层主要层片,并多构成群落的建群层片。

Tall evergreen having a symmetrical spreading crown and needles growing in umbrellalike whorls at ends of twigs.

高大的常绿树种,树冠对称展开,小枝末梢长有伞状针叶。

Soft branch yellow cicada is oleander division constant green half erect bush, xie Chang is elliptic, long 8-11 centimeter, wide 2-4.5 centimeter, opposite or 3-5 impeller are unripe, bud evil on Xie Duo is verticillate, xie Quanyuan, spend yellow, canister shape 5 crack, interior has amaranth streak, racemose move is born in the coping of new tip, florescence 6 one in October.

软枝黄蝉为夹竹桃科常绿半竖立灌木,叶长椭圆形,长8-11厘米,宽2-4.5厘米,对生或3-5叶轮生,萌孽条上叶多为轮生,叶全缘,花黄色,筒状五裂,内部有紫红色条纹,总状花序着生在新梢的顶部,花期6一10月。

Four nitrogen addition treatments i.e, null nitrogen level, low nitrogen level (LN, 50 kg N hm-2 a-1), moderate nitrogen level (MN,100 kg N hm-2 a-1) and high nitrogen level (HN, 150 kg N hm-2 a-1), were established in the forest. All nitrogen treatments were carried out in triplicates.

通过原位进行低氮(LN, 50 kg N· hm-2· a-1)、中氮(MN, 100 kg N· hm-2· a-1)和高氮(HN, 150 kg N· hm-2· a-1)处理,研究了川南天然常绿阔叶林土壤酶活性特征及其对模拟N沉降的响应。

Evergreen or deciduous berry-bearing shrubs of northern hemisphere: cranberries; blueberries.

北半球常绿或落叶性灌木的一个属,浆果;蔓越桔;蓝莓。

In recent years, restoration of evergreen broad-leaved forest work started full swing in Zhejiang Province.

近年来,常绿阔叶林的生态恢复工作已在浙江省全面展开。

Forest coverage 85%, Zhongshan moist evergreen broad-leaved forest area of 663% percent of the region.

森林覆盖率85%,中山湿性常绿阔叶林占全区面积的663%。

To protect the object of the northern subtropical evergreen broad-leaved forest and habitat in which wild animals.

保护对象为北亚热带北部常绿阔叶林及栖息其中的野生动物。

Overall, the responses of soil enzyme activities to nitrogen deposition in the evergreen broad-leaved forests were different.

总体上,常绿阔叶林中不同土壤酶活性对N沉降的响应有所差异。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

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双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。