1. liquid nitrogen frozen
   液氮冷冻的
2. a quarternary nitrogen atom.
   和四个碳原子相连的氮原子
3. Dinitrogen trioxide、Nitrogen trioxde.
   三氧化二氮;
4. his work on nitrogen fixation in plants.
   他对植物体内氮固化过程的研究。
5. nitrogen dioxide is a highly reactive gas.
   二氧化氮是易起化学反应的气体。
6. Nitrogen is a gas without colour or smell.
   氮是一种无色无臭的气体。
7. What is the percentage of nitrogen in air?
   空气中所含的氮的比例是多少?
8. Nonsoluble nitrogen (NSN) and soluble nitrogen (SN) in ten tobacco samples were determined with a flow analyzer.
   采用流动分析法测定了10种烟草中的不溶性氮和可溶性氮。
9. lupins fix gaseous nitrogen in their root nodules.
   羽扇豆在根瘤中使气态氮固化。
10. In this paper,the relation of heterotrophic bacteria to nitrogen and phosphorus in marine environment is studied by adding nitrogen and phosphorus to the seawater in mesocosm.
    利用海洋围隔生态系统实验装置,向海水中施加不同浓度的氮和磷,研究海洋异养细菌与海水环境中氮、磷的关系。
11. and advance protein agglomeration and reduce solidifiable nitrogen content to 0.
    加强蛋白质凝聚,麦汁可凝固氮下降0。
12. "There are several kinds of gas in the air, with nitrogen amounting to the most part."
    "空气中有好几种气体,氮所占的比重最大。"
13. The corresponding solving methods,exsiting in the determination of the amino nitrogen by Nashi colormetric method.
    针对纳氏比色法测定氨氮过程中存在的问题,提出了相应的解决办法。
14. After the precursor's thermal decomposition under the protection of nitrogen,a kind of nonstoichiometric titanium oxide can be prepared.
    用钛粉和草酸反应制得前驱物,在氮气保护下600℃热分解前驱物制备了一种非化学计量钛氧化物。
15. It was found that the sulphonamide group and the substituents on nitrogen atom within the molecule would effect the properties of these dyes.
    坚牢度和光谱特性,发现磺酰胺基和在它的氮原子上的取代基会影响该类染料的性能。
16. Now, supernutrition is the first problem in Dianchi, and the environment of the lake deteriorate gradually for more total phosphorus and total nitrogen was input.
    滇池是整个流域污染物唯一的汇,这也是其难以治理的原因。
17. Conclusions Obvious negative nitrogen balance and hypoalbuminosis occur after surgery for tumors of digestive system.
    结论消化道肿瘤病人术后可出现明显的负氮平衡和低蛋白血症。
18. For example, some kinds of soil back bacteria take nitragin nitrogen from the air and make a form that plants can use.The plants keeps keep the nitragin nitrogen in the their roots.
    例如，一些土地细菌从空气中吸收氮，从而形成一种作为可以利用的形式，这些作物讲氮保存在他们根部。
19. Triaminoguanidine is a kind of non-azide nitrogen-rich flammable compound, which has some advantages of high nitrogen, good thermal stability, and high positive formation enthalpy, etc.
    摘要三氨基胍是一种非叠氮类、富氮型、可燃性化合物，其系列含能化合物具有高的正生成焓、热稳定性好、氮含量高等特点。Every tonne of coal contains,on average,30 kilograms of nitrogen.
    每吨煤平均含30公斤氮。
20. Algae microorganisms in the water overpopulate because of the surplus nitrogen.
    水中的藻类微生物由于氮的富余而过度繁殖。
21. Nonsoluble nitrogen (NSN) and soluble nitrogen (SN) in ten tobacco samples were determined with a flow analyzer.
    采用流动分析法测定了10种烟草中的不溶性氮和可溶性氮。
22. Conclusions Obvious negative nitrogen balance and hypoalbuminosis occur after surgery for tumors of digestive system.
    结论消化道肿瘤病人术后可出现明显的负氮平衡和低蛋白血症。
23. The corresponding solving methods,exsiting in the determination of the amino nitrogen by Nashi colormetric method.
    针对纳氏比色法测定氨氮过程中存在的问题,提出了相应的解决办法。
24. Procarbazine, nitrogen mustard, and ifosfamide, which can increase risk for myelodysplastic syndromes and acute myelogenous leukemia.
    丙卡巴肼、氮芥和异环磷酰胺：可增加患骨髓增生异常综合症和急性粒细胞白血病的风险。
25. "There are several kinds of gas in the air, with nitrogen amounting to the most part."
    "空气中有好几种气体,氮所占的比重最大。"
26. Milia in regressing plaques of mycosis fungoides:Provoked by topical nitrogen mustard or not?
    蕈样肉芽肿消退斑块发生粟丘疹:是由外用氮芥引起的吗?
27. After the precursor's thermal decomposition under the protection of nitrogen,a kind of nonstoichiometric titanium oxide can be prepared.
    用钛粉和草酸反应制得前驱物,在氮气保护下600℃热分解前驱物制备了一种非化学计量钛氧化物。
28. The wastewater of hexanolactam (nylon) fiber production in Shijiazhuang Synthetic Fiber manufactory is high concentrated with organic nitrogen compounds.
    己内酰胺锦纶化纤废水属于高含氮高浓度有机废水。
29. The cryoprobe soaked in liquid nitrogen is a new cryother- apic instrument with metallic material as its cold storage.
    浸冷式液氮冷刀,系用金属材料为储冷装置的新式冷冻治疗器械。
30. With calcium chloride precipitant to eliminate the interference of PO43-, total nitrogen in compound fertilizer is determined by formol method.
    用氯化钙作沉淀剂，消除磷酸根离子的干扰，用甲醛法测定复合肥中的总氮。
31. The function of hydrocarbons and nitrogen oxides in photochemical smog formation and the formative process of ozone and peroxyacetyl nitrate are discussed.
    介绍了氮氧化物、碳氢化合物在形成光化学烟雾中的作用和臭氧、过氧乙酰硝酸酯产生的过程,并介绍了光化学烟雾的形成机理。
32. In the last few years,the tripodal ligands bearing nitrogen atoms have drown much attention because of their polydentate,flexility and ease to synthesize.
    近年来,含氮三角架配体由于其多配位点、半刚性及易合成等特点,引起了人们的广泛兴趣。
33. It was found that the sulphonamide group and the substituents on nitrogen atom within the molecule would effect the properties of these dyes.
    坚牢度和光谱特性,发现磺酰胺基和在它的氮原子上的取代基会影响该类染料的性能。
34. A method for determination of nitrogen in N-MnFe by titrimetry with amidosulfonic acid after alkaline distillating separation has been studied in this paper.
    本文研究了强碱蒸馏分离-氨磺酸滴定法测定氮化锰铁中氮的分析方法。
35. The results indicate that the modification by heating and acids could not significantly increase the adsorption capacity of the modified stellerite for ammonia nitrogen.
    结果表明，加热改性与无机酸改性不能显著提高沸石对氨氮的吸附量。
36. Two different kinds of palladium complexes of nitrogen containing polymere havebeen prepared and their catalytic actions for p -nitro -methyl benzfene have been invertigeted.
    制备了两种不同的含氮高分子-钯络合物，并研究了它们对对硝基甲苯的催化活性。
37. The water eutrophication is caused by the incessant accumulation of nitrogen and phosphorus in water and excessive propagation of a few of algal and hydrobios.
    摘要水体中氮磷营养物质不断积累，部分藻类及水生生物的过度繁殖，导致了水体的富营养化。
38. It is equipped with asphalt return tube, anti-puffing pressure vent valve, anti-aging overhead nitrogen valve, thermometer, volumeter and output asphalt rapid discharge valve and coupling.
    配备沥青溢流管、防冒液呼吸阀、防老化顶置充氮阀、温度计、容量计和输出沥青的快速卸料阀及接耦。

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