查询词典 nitrogen-free

Unless leaching occurs, nitrogen should not be applied after lay-by.

除非发生淋洗，氮肥不应在烟草田间作业结束后再施用。

In the old lead chamber processnitrogen dioxide (NO2) was used for the oxidation though in practice mixtures of nitrogen oxides were used.

早期的铅室法工艺中用二氧化氮来氧化二氧化硫，尽管在实际生产中用的是氮氧化物的混合物。

In 1970, a law was passed prohibiting the development of more than the specified level of lead, carbon monoxide, sulfur dioxide, nitrogen oxide, volatile organic compounds, ozone and various toxic substances.

1970年，通过了一项法律，禁止那些铅、一氧化碳、二氧化硫、氮氧化物、挥发性有机化合物、臭氧以及其它有毒物质超过规定标准的生产。

MethodNortheast Rape leaves as subject, using the Kjeldahl Nitrogen Determination method, Soxhlet extraction method and direct drying method, the content of leaf protein, crude fat and water in Northeast Rape leaves were determined to study the influence of different pH, extraction temperature, time and the ratio of solid-liquor on the extraction percentage of leaf protein.

方法以东北小油菜叶作为试验材料，分别利用凯式定氮法、索式抽提法和直接干燥法测定油菜叶中叶蛋白、粗脂肪和水分含量，研究不同pH值、提取温度、时间及料液比对叶蛋白提取率的影响。

It is symbiotic with legume and has excellent efficiency to fix nitrogen.

根瘤菌是一类与农业生产关系密切的细菌，与豆科植物共生具有很高的固氮效率。

Industries for production and distribution of legume inoculants containing the nitrogen-fixing soil bacteria rhizobia have been well established for more than 60 years.

在过去的60多年里，建立了生产和销售包含土壤固氮细菌的豆科接种剂的工业。

There is significant controversy among scientists and farmers about the optimum way to manage nitrogen in legume production systems.

在科学家与农民之间一直存在着豆类作物生产系统中有关氮素管理的最佳方式这种有意义的争论。

LEGUMINOUS PLANTS TO BE HOSTS FOR NITROGEN-FIXING BACTERIA.

于充当那些具备固氮作用的细菌的寄主。

Exposure to an elevated temperature may occur in the presence of oxygen, water, nitrogen and mixtures thereof for less than or equal to about 18 hours.

在升高的温度下的暴露可在氧气、水、氮气和它们的混合物的存在下发生进行小于或等于约18小时。

Crossbred (Limousin × Lu-xi) beef cattle, fitted with permanent cannulas in rumen were used . Metabolism of nutrients was investigated by the determination of the disappearance rates of NDF and ADF and bacterial nitrogen.

试验还结合活体内尼龙袋技术，应用安装永久性瘤胃瘘管的肉牛，进一步研究了不同钼、硫、氮、铜对瘤胃NDF和ADF降解率的影响。

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。