查询词典 nitrogen-free

Effect of ammonia concentrations on growth of Chlorella vulgaris and nitrogen removal from media.

不同氮素形态及配比对蔬菜生长和品质的影响。

The results of N/P ratio test show that the removal of nitrogen and phosphorus by immobilized Chlorella is influenced by N/P ratio.

氮磷比试验结果表明，固定化小球藻对氮磷的去除受氮磷比的影响。

The content of chlorophyll all was decreased with the increase of maturity degree under three nitrogen forms.

叶绿素的含量都随着成熟度的增加而降低。

Nitrogen deficiency causes stunting of growth and chlorosis of older leaves, as chlorophyll pigments are broken down so their components can be reused in the young growing parts of the plants.

氮的缺乏可以导致生长的迟缓和老叶片的缺绿症，因为分解的叶绿素被新生的叶片重新利用了。

The differences of 7 kinds of essential amino acid content for people,11 kinds of essential amino acid content for pig,14 kinds of essential amino acid content for chook,amino acid content,grain yield,protein-nitrogen content and protein yield of brown rice between forage rice and eatable rice were significant or extremely significant.

饲料稻品种糙米中人体7种必需氨基酸含量、猪11种必需氨基酸含量、鸡14种必需氨基酸含量、氨基酸含量、籽粒产量、糙米蛋白氮含量和糙米蛋白质产量与食用稻品种之间差异显著或极显著。

The essay introduces a new way to measure the total nitrogen of surface water in ion chromatograph .

本文提出了采用离子色谱法测定地表水中总氮的新方法，对离子色谱条件和流动相的选择进行了研究，方法具有良好的精确度、准确度，用于实际样品分析，结果令人满意。

As well as activity was exhibited. Theaddition of cinchonidine led to a remarkable increase in the reaction rate, as confirmed bythe IR study that the modifier activates the carbonyl groups of the reactant through itsquinuclidine nitrogen. On the contrary,〓 exerted a strong inhibition effect on theenantioselective hydrogenation. Chapter 3 Finely dispersed polyvinylpyrrolidone-stabilized iridium andbimetallic clusters were prepared by the alcohol-water reduction method.

第三章 采用醇水还原的方法制备了聚乙烯基吡咯烷酮稳定的铱纳米簇及双金属纳米簇，对丙酮酸甲酯的催化氢化表明，在铱金属簇催化体系中，辛可尼定不仅诱导了一定的对映选择性，同时对反应活性有明显的促进作用，平均反应速率可提高2-6倍。

The results show that the Raman peaks of N-N and O-H stretching vibration in nitrogen hydrates are observed at 2322.4cm-1 and 3092.1cm-1, respectively, which are very similar to those in natural air clathrate hydrates.

结果表明，氮气水合物中的N-N和O-O键的拉曼峰分别为2322.4cm-1和 3092.1.8cm-1，与天然的空气水合物中的数据十分接近。

Evaluation index of industrial water pollution are defined based on industrial wastewater emission standards and the emphasis of water control, according to industrial water pollution emissions data of 31 provinces in China impact of water pollution is calculated by the improved entropy method, lead, cyanide and ammonia nitrogen are in the top three on the impact of water pollution, water pollutant index are divided into heavy metals index and composite index by variable cluster.

根据我国工业各行业的排放标准和水污染控制重点，确定了我国工业水污染状况评价指标，采用改进熵权法对我国31个省区工业水污染物的排放数据进行计算，得到工业废水中铅、氰化物、氮氨对水污染影响居于前三位，应用变量聚类将水污染物分成重金属指标和复合指标，通过熵值对全国各地区工业水污染总体状况、重金属指标、复合指标进行排序，得到东部、中部地区是我国工业水污染较严重地区，但两个地区工业水污染原因有较大区别。

For the high nitrogen mass fraction in coal tar,the hydrodenit...

由于煤焦油的氮含量较高，要达到较好的加氢脱氮效果必须在高温、高压和低空速下进行。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。