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- Total content of nitrogen 总氮含量
- The total content of PUFA was 38.47% in fish oil,the content of DHA and EPA was 23.63% and 4.84% respectively. 在此条件下;粗鱼油的提取率为4.;22%25;理化指标达到了SC/T3502-2000的粗鱼油二级标准;多不饱和脂肪酸总含量高达38
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- After purification,the total content of hydrogen sulfide with hydrogen phosphide are less 10ppM in the acetylene gas. 净化后的乙炔气中硫化氢、磷化氢含量总和小于10ppm,净化效果好,安全可靠,成本低,效益好,值得乙炔站推广。
- The article introduces the process of improving atomizer burner of boiler and burning condition to reduce the content of nitrogen oxide in flue gas. 本文对太原第一热电厂通过改造锅炉喷燃器,改善燃烧条件以降低烟气中氮氧化物含量的过程进行介绍。
- So combining formaldehyde method with Mohr method,a method that analyze continuouly the content of nitrogen and chlorine is established. 为此将甲醛法和莫尔法相结合,建立了一种连续分析化肥产品中氮和氯的方法。
- The result shows that the total content of flavonoids in Eupatorium lindleyanum DC was about 2%. 结果显示:野马追中含大量黄酮类化合物,含量在2%25左右;
- Determination of Total Content of Mercury in Soil Sample by High Temperature Pretreatment-cold Vapour Atomic Ab sorption Assay. 高温处理-冷原子吸收法测定土壤样品中总汞含量。
- The content of nitrogen and chlorine in fertilizer is usually measured,but routine analysis method needs weighing twice,consuming long time and strict condition. 化肥中氮和氯的含量是经常需检测的指标,但常规分析方法为两次称量,耗时长,条件控制严格。
- Their fatty acids mainly are unsaturated fatty acid, the total content of EPA and DHA is 13.8% in the head and 7.77% in the liver. 鱼头和鱼肝脂质中的脂肪酸组成基本相似,不饱和脂肪酸含量较高,EPA和DHA的总含量分别为13.;8%25和7
- The relatively high content of nitrogen in gas in Yingnan 2 well might be the results of high temperature pyrolysis of kerogen in Cambrian mudstone and CO2 is organic genetic gas. 英南2井天然气中较高含量氮气可能与寒武系泥岩干酪根高温裂解相关;CO2为有机成因气。
- In this paper,redox and total content of ascorbic acid which was of bioactivity were determinated simultaneously by infrared spectroscopy. 文章对具有生理活性的抗坏血酸的氧化态、还原态及总量进行了红外光谱法同时测定。
- Abstract : The content of nitrogen and phosphorus in the different parts of water hyacinth was tested, and some other economic crops were compared with it in the paper. 摘要 : 分析、研究了水葫芦植株不同生长时期、不同部位的全氮和全磷含量,并与常见的经济作物进行比较。
- In the past long time, the total content of heavy metal in the soil was a very important parameter for evaluating the soil contaminating degree. 在过去很长一段时间里重金属含量的高低一直都被看作是土壤污染程度的一个重要指标。
- The effect of nitrogen form,yellowing temperature,curing facility on the content of nitrate, nitrite and Tobacco-specific nitrosmaines (TSNA) were studied. 探讨了氮素形态、变黄温度、烘烤设备等因素对烤烟烟叶中硝酸盐、亚硝酸盐和烟草特有亚硝胺(TSNA)含量的影响。
- The content of nitrogen and phosphorus in the different parts of water hyacinth was tested, and some other economic crops were compared with it in the paper. 分析、研究了水葫芦植株不同生长时期、不同部位的全氮和全磷含量,并与常见的经济作物进行比较。
- The total content increase in earlier stage and decrease a little in later stage. the content of neophytadiene decrease in Straight line. 新植二烯含量在陈化过程中总体上处于直线下降的态势。
- RESULTS:The total content of aloeemodin,rhein,emodin,chrysophanol and physcin was above 4%. The average recovery rate was 100.54%,RSD=1.58%. 结果:芦荟大黄素、大黄酸、大黄素、大黄酚、大黄素甲醚总含量为4%25以上,平均回收率为100.54%25,RSD:1.58%25。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- The total content of free amino acid is 0.85%, among them, Glu content is the highest, about 0.15%, and the Cys content is the lowest, about 0.004%. 游离氨基酸中总氨基酸含量为0.;85%25,其中含量最高的是谷氨酸,约为0