查询词典 nitrogen

Although they do not heterocyst, but also found that some species are nitrogen fixation, such as the red light ball algae.

虽然它们没有异形胞，但也发现有的种类有固氮作用，如淡红色球藻类。

This dissertation provided a scientific basis for making use of nitrogen to produce high strength gray cast iron in industry.

本文的研究工作为在工业生产中利用氮这种廉价资源生产高强度灰铸铁提供了依据。

Black or green tea is high in certain organic compounds containing nitrogen and other important elements needed for microorganism growth.

红茶或绿茶的某些有机化合物含氮和微生物生长所需要的其他重要元素是高的。

Objective To examine the cell viability and hemodynamic functions of the stented homograft valves preserved in liquid nitrogen.

文章摘要：目的检测经液氮保存的人同种带支架瓣膜的细胞活性和流体力学性能。

Methods Cell viability of the stented homograft valve preserved in liquid nitrogen after 3 months of preservation （experimental group,n = 6） was examined using flow cytometer.

制作同种带支架瓣膜经液氮保存3个月后，利用流式细胞仪技术定量检测瓣叶细胞活性（实验组，n=6），采集新鲜同种瓣膜作为对照（对照组，n=6）。

Through the pyrolysis of PVC in air with low flow rate and in nitrogen, small amounts of PAHs and homologue of benzenes were formed.

PVC材料在氮气环境和流速较低的合成空气环境中，有少量苯系物和PAHs产生。

Fast growing species such as hornwort or waterweed remove nitrogen-containing pollutants from the moment they are planted.

生长快速的植物，诸如金鱼藻（Ceratophyllum demersum或伊乐藻(Elodea和Egeria)，一经栽种就能清除含氮的污染物。

We designed several treatments according to different illumination intervals after 72h darkness, light intensity, and nitrogen fertilizer on two wheat species, and an enzyme linked immunosorbtion assay was developed for the measurement of Rubisco and Rubisco activase in horsebean, corn and rape leaves.

对两个不同品种的盆栽小麦进行不同光照和施氮水平处理，并提取其粗酶液，按照上述最佳工作浓度分别稀释该粗酶液以及相应的多克隆抗体，通过ELISA测定小麦叶片中的Rubisco及其活化酶含量。

Within the nodules the bacteria convert free nitrogen to nitrates, which the host plant uses for its development.

根瘤内的固氮菌将游离氮转化为硝酸盐，被宿主植物在发育中利用。

The results showed that in nitrogen pollution water, the repair results of Eichhornia crassipes is better than Hosta ventricosa.

结果表明凤眼莲对氮污染水体的修复效果要好于紫萼玉簪。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。