不含氮的

The key point is that the Gulf of Eilat is an oligotrophic sea, a sea that does not have nitrogen at all,Loya explained.

洛亚解释道："关键是埃拉特海湾是一片营养贫乏、完全不含氮的海域。"

A nonnitrogenous food substance consisting chiefly of starch; any substance resembling starch .

一种不含氮的食物，主要由淀粉组成；任何类似淀粉的物质。

Under normal circumstances, this is not a problem because food proteins contain only the major components of nitrogen and other major components are not nitrogen, the Kjeldahl method is a very accurate determination of protein content .

在通常情况下，这不是个问题，因为食物中的主要成分只有蛋白质含有氮，其他主要成分都不含氮，因此凯氏定氮法是一种很准确的测定蛋白质含量的方法。

The chemical analysis of N, P and K in organic fertilizer is presented: sample is decomposed by sulfuric acid-hydrogen peroxide and prepared to be a solution. N can be determined by NC-2 model quick N analysis set, P by chinoline molybdic acid method and K by tetraphenylboron potassium, needless of spectral photometer and flame photometer, the method is available when the content of N, P or K is over 0.1% with desired accuracy and precision.

介绍用化学分析方法测定有机肥料氮、磷、钾的含量，即样品经硫酸-过氧化氢消化后，制备待测溶液，分取待测溶液用NC-2型快速定氮仪测定氮，用磷钼酸喹啉重量法测定磷，用四苯硼酸钾重量法测定钾，不需使用分光光度计和火焰光度计，适宜一般复混肥料厂采用，对含氮、磷、钾分别达0.1％以上的样品均可用本法测定，方法的准确度和精密度能满足生产的要求。

The key point is that the Gulf of Eilat is an oligotrophic sea, a sea that does not have nitrogen at all,Loya explained.

洛亚解释道：&关键是埃拉特海湾是一片营养贫乏、完全不含氮的海域。&

The nitrogen in fossil fuels is more refractory than sulfur, and microbial approaches for petroleum denitrogenation could be beneficial as the classical hydroprocessing methods are costly and unefficient.

化石燃料中所含的有机氮较有机硫更难以去除，常规的化学脱有机氮技术高压加氢法处理燃油能耗高，处理效果不理想等方面的缺陷使人们思考生物脱氮的可能性。

As there was no nitrogen in the solution before experiment, the nitrogen in amino acids should have resulted from deposition of 〓 from outside.

由于反应溶液中本不含氮，故氨基酸中的氮应是外来氮离子沉积于溶液中的结果。

Protein is mainly made of amino acids, its nitrogen content is generally not more than 30%%, while nitrogen content as per melamine molecular formula amounts to 66％%.

蛋白质主要由氨基酸组成，含氮量一般不超过30%%，而三聚氰胺的分子式含氮量达到66％。

Such compositions comprise at least one textile-cleaning surfactant; droplets of miscible silicones comprising both a polarly-functionalized, preferably nitrogen-containing amino or ammonium functionalized, polysiloxane component and a nitrogen-free non-functionalized or non-polarly-functionalized polysiloxane component; and a perfume component comprising fragrant aldehydes and/or ketones or a pro-perfume capable of providing such aldheyde and/or ketone perfume materials in situ.

这些组合物包含至少一种纺织品清洁表面活性剂；可混溶硅氧烷液滴，所述可混溶硅氧烷液滴不仅包含极性官能化的聚硅氧烷组分，优选含氮的氨基或铵官能化的聚硅氧烷组分，而且还包含不含氮的非官能化的或非极性官能化的聚硅氧烷组分；和包含芳香醛和/或酮的香料组分或能够就地提供这些醛和/或酮香料物质的前香料。

The teatments of urea application rate reduced by 5%～15% and added compound nitrogen fertilizer synergists,the growth and nitrogen content of maize were not significat changed,and the total ~(15)N uptake and nitrogen uptake by maize were the same as CK_2 or increased a little.

氮素减量5%~15%时配施复合氮肥增效剂对玉米生长和含氮量影响不显著，15N和吸氮总量与不施增效剂的处理相当或有所提高。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。