查询词典 water hyacinth

Effects of nitrogen-degrading microbes on biological characteristics of the growth of water hyacinth, the contents of nitrogen and phosphorus in water, and the dynamic change of microorganism in water were analysed by the elimination of nitrite, organic nitrogen and phosphor in water by nitrobacteria and denitrobacteria.

利用硝化细菌与反硝化细菌对水体中亚硝酸盐、有机氮、磷等营养物质的消除作用来分析降氮灵菌剂对水葫芦生长的生物学特性、水体中氮磷含量变化以及水体中微生物消长动态的影响。

Sanshui changes in the quality of the river ducks the most obvious change will be the Azolla, water hyacinth and water eutrophication instructions in large plants, which to some extent for some birds with abundant food resources, on the other hand, it implies a more ecological chain was destroyed crisis in the long term This bird's survival is negative.

三 水体质量的变化今年鸭子河最明显的变化，就是满江红、凤眼莲等水体富营养化指示植物的大量出现，某种程度上这为一些水鸟提供了丰富的食物资源，另一方面，它更隐含着生态链被破坏的危机，从长远看，这对鸟类的生存是不利的。

Its test result, after using agent of sewage disposal of biology of carapace god ocean and technology of flood body rehabilitate, build good oxygen biology to stabilize a bed, processing sewage effect is apparent, expression is: Black smelly sewage is rapid decolour, deodorization, become clear, insipidity, the COD after handling two days by 333 drop 76, achieve view and admire water and the water quality demand that breed water, can develop aquatic substance. A green alga, red snapper grows to feed after 4 days wait for primary live thing, breed the water biology such as water hyacinth to be able to put in a suitable place to breed view and admire a fish.

其试验结果，运用甲壳神海洋生物污水处理(通过物化方法去除水中一些物质的过程)剂和大水体修复技术后，建立好氧生物稳定床，处理污水效果明显，表现为：黑臭的污水迅速脱色、脱臭，变得澄清、无味，处理两天后COD由333下降到76，达到观赏水和养殖水的水质要求，可培养水生物。4天后长出绿藻、红鱼食等初级生物，养殖水葫芦等水生物并可放养观赏鱼。

After secondary bio-oxidation, Water hyacinth adsorption pond is added to further reduce COD, SS and colour index of wastewater, the environmental quality of natural water body is better protected, and deep treatment and good reuse condition of the wastewater are accomplished.

在二级生化之后，增设水葫芦吸附塘进一步降低废水的COD、SS与色度，更好地保护了天然水体的环境质量，且为实现废水的深度处理与回用建立了良好的条件。

Water hyacinth and other kinds of water weeds cause problems in every part of the world.

凤眼兰和其它杂草在世界各地造成麻烦。

Water hyacinth and other kinds of water weed s cause problems in every part of the world.

凤眼兰和其它杂草在世界各地造成麻烦。

Living organisms such as water hyacinth can condense dilute impurities in water into a concentration with economic value.

活体生物如水浮莲，能够将稀释在水里的杂质浓缩成为具有经济价值的浓缩物。

Experimental results showed that water hyacinth would lose the absorbency to nutrition in water when the concentration of nitrogen and phosphor were below 2 mgL^(-1) and 3 mgL^(-1) respectively.

结果表明，水葫芦在水体中的氮降低到2 mgL^(-1)以下，磷降低到3 mgL^(-1)以下时就会丧失对这些营养物质的吸收能力。

There was a heated dispute between the merit and fault of water hyacinth on purification or pollution in water-bodies.

凤眼莲在城市河湖的污染与净化中的是非功过争议很大，双方意见均有部分正确，但各有片面性。

However, water hyacinth in today's economic construction and has a good value,control of water hyacinth invasion and rational utilization of water hyacinth, make wastes turn into good things is today's important subject.

然而凤眼莲在今天的经济建设中又具有很好的利用价值，控制凤眼莲入侵的同时合理利用凤眼莲，变废为宝成为今天的重要课题。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。