查询词典 ammonia

The principle of preparation for white carbon black is described, the influence of the concentration of fluosilicic acid, the dripping velocity of ammonia water, the reaction temperature and the curing time on the specific surface area of white carbon black are studied.

论述了白炭黑的制备原理，研究了氟硅酸浓度，氨水滴加速率，反应温度，陈化时间对白炭黑比表面积的影响。

Fluosilicic acid is the by-product in production of phosphate fertilizers.With certain temperature,adjusted pH,and controlled reaction time,fluosilicic acid was dissolved in the solution of ammonia liquor,and then runny paste of silica and solution of ammonium fluoride were obtained after seperating the reaction slurry.

采用氨水在一定温度下与磷肥行业副产品氟硅酸反应，调整pH，控制反应时间，反应后得到的料浆，经过滤得白炭黑软膏和氟化铵溶液。

The optimum process starting from 1,3-dihydroxyacetone and formamidine acetate was: 22.54g(0.25mol) 1,3-dihydroxyacetone, 29.12g(0.28mol) formamidine acetate and 120ml isopropanol in liquid ammonia was heated to 40℃ for 8h.

以1，3-二羟基丙酮和醋酸甲脒为原料的较佳工艺：1，3-二羟基丙酮22.54g (0.25mol)，醋酸甲脒29.12g (0.28mol)，异丙醇120ml，通入液氨，40℃反应8h，减压蒸馏除去反应液中的氨气后过滤，滤液加至热的苦味酸饱和溶液，自然冷却至室温，制得4(5)-羟甲基咪唑苦味酸盐69.5g，收率85.0%。

In period of nourishment growth, Ammonia volatilization losses velocityis very small and there is no evidently difference between winter wheat and alfalfa. But inprocreation growth period, it increased geminately.

在营(来源：AeeBC71论文网www.abclunwen.com)养生长期，小麦与苜蓿地上部分的氨挥发损失速率较低且没有明显差异，但进入生殖生长期成倍增加，苜蓿的氨挥发损失高于小麦 65%左右。

Ecological conditions in such a mutation has occurred has become a unique shape of the genetic characteristics of the bleaching with the law back to the green phenomenon and the characteristics of ammonia Glandless.

在这样的生态条件下发生的突变体形成了独有的遗传特性，具有规律性的白化返绿现象和高氨低酚的特征。

Xinjiang medicine's content of amino acid of fruit juice of mulberry fruit is concrete: 2,6-diaminocaproic acid 0.089, serine 0.044, histidine 0.025, glycine 0.049, ammonia 0.088, valine 0.057, 2-amino-5-guanidinovaleric acid 0.051, isoleucine 0.042, Radix Asparagi 0.068, 0.020, threonine 0.076, 0.022, 0.128, 0.069, third 0.048, benzene third 0.042 leucine glutaminic acid methionine hydroxyphenylaminopropionic acid.

新疆药桑椹果汁氨基酸含量具体为：赖氨酸0.089、丝氨酸0.044、组氨酸0.025、甘氨酸0.049、氨0.088、缬氨酸0.057、精氨酸0.051、异亮氨酸0.042、天门冬氨酸0.068、酪氨酸0.020、苏氨酸0.076、蛋氨酸0.022 、谷氨酸0.128、亮氨酸0.069、丙氨酸0.048、苯丙氨酸0.042。

Alkyl substituted imidazoles were synthesized by reaction of alkyl amines with glyoxal, formaldehyde and ammonia in methanol.

在对环境保护和资源的可持续利用倍受关注的今天，绿色化学是化学发展的必然趋势。

This paper about the technics is according to the situation of our country, using the material of haloid liquid, ammonium bicarbonate and ammonia to prepare the super light MgO.

所以研究高附加值的特级轻质氧化镁及其新工艺技术，节能降耗，增大经济效益和社会效益就是本研究的目的。

This paper about the technics is to use the material of haloid liquid, ammonium bicarbonate and ammonia to preparate the super light MgO.

通过对碳酸氢铵和氨水的消耗量，反应温度对视比容、回收率的影响等工艺条件的研究和探讨，找到其最佳工艺条件。

Effects of different additive levels of zeolite, ferrous sulfate heptahydrate, ter-ramycin,and urease inhibitor, to fresh chicken feels on the concentrations of ammonia and sulfhydrogn in the atmosphere were inquired using a L9(34) or thgonal design.

本试验采用L_9(3~4)止交试验设计，研究了在鲜鸡粪中加入不同水平的沸石、土霉素、绿矾、脲酶抑制剂去除NH_3和H_2S等臭气物质的效果。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。