It can also restrain the decomposition of organic substances in the soil and the bind of nitrogen, and wash away the nutritious elements, such as magnesium, calcium, and potassium. the acid rain deprives the soil. it acidifies the rivers and lakes, and dissolves the heavy metal in the soil into water, therefore poisons the fish
它可以直接使大片森林死亡，農作物枯萎；也會抑制土壤中有機物
的分解和
氮的固定，淋洗與土壤粒子結合
的鈣、鎂、鉀等營養元素，使土壤貧瘠化；還可使湖泊、河流酸化，並溶解土壤和水體底泥中
的重金屬進入水中，毒害魚類；加速建築物和文物古跡
的腐蝕和風化過程；可能危及人體健康。
Acyl amine compounds containing nitrogen are rare in the plant essential oil
含
氮的酚胺類化合物在植物揮發油中並不多見。
Adenine a nitrogenous base ( 6 - amino - purine ) found in dna and rna
腺嘌呤：在dna和rna中發現
的含
氮的堿基（ 6氨基嘌呤） 。
The research indicates that the modern sediment is divided three layers : polluted layer, transition zone and unpolluted layer. just the pollute layer cause dianchi lake environmental pollution. the high value district of ammoniac nitrogen distributes near northern part haigeng mainly, middle part increase slightly, have most lower near southern part, the content of ammoniac nitrogen of the polluted layer sediment lower than the lower layer ; the high value district of effective phosphorus distributes near haikou - jinning, from the north to the south, the content of effective phosphorus increases progressively, the content of effective phosphorus of the polluted layer sediment obviously higher than the lower layer
研究結果表明：滇池現代沉積物主要分為三層，污染層、過渡層和未污染
的湖泊沉積層，其中污染層是對滇池環境污染造成影響
的層位；氨
氮的高值區主要分佈在北部海埂附近，中部略有增高，南部則最低，表層沉積物
的氨
氮含量低於下層；而有效磷
的高值區則分佈在海口?晉寧附近，由北向南，有效磷
的含量依次遞增，表層有效磷
的含量要明顯高於底層。
Leachate. determination of ammoniacal nitrogen. distillation and titration method
生活垃圾滲瀝水.氨態
氮的測定.蒸餾和滴定法
The effect of nitrogen can be overcome by sheathing the flame in argon.
氮的影響則可以通過用氬氣包覆火焰而予以克服。
It is possible to harness the versatile chemical properties of cyanogen azide.
氰化疊
氮的靈活多變
的化學性質是可控制
的。
Letter of declaration that all goods are azo dyes free, low cadmium and plastics parts are phthalate free signed by the supplier on their company ' s letterhead
公司聲明在供應尚信簽
的抬頭上顯示所有
的貨物不含
氮的染料，不含低鎘及塑料部分不含酞酸鹽
Standard test method for polyurethane raw materials : determination of basicity in polyols, expressed as percent nitrogen
聚氨脂原材料
的標準試驗方法:可以表示為
氮的百分量
的多元醇中堿度
的測定
However, it is not easy to incorporate large n concentration in gap due to the large differences in lattice structure ( gan belongs to wurtzite structure while gap zinc blende structure ) and in lattice constant ( ~ 20 % ) between gan and gap, which will lead to an extremely large miscibility gap
然而要在gap中實現高濃度
的摻
氮並不容易。這主要是由於gap和gan之間較大
的物理特性
的差異，特別是晶格結構和晶格常數
的差異，使得gap和gan存在較大
的可混溶性間隙，從而難以生長高質量
的高摻
氮的gap材料。
In the tiller stage, the nitrogen accumulation quantity of high nitrogen treatment was obviously higher than that of low nitrogen treatment, but it was reverce after the booting stage
在同一施
氮水平和施
氮方式下，增施鉀肥有利於提高生育後期對
氮的吸收。
The research results indicated that the ecological effect of rice rhizosphere microbes was not only affected by water regime and nitrogen fertilizer separately, but also affected by the mutual effect of the two factors, in general, n had a dramatic effect in the tillering stage, water regime produced little in the booting stage, during the rice riping stage, the rice was not only affected by water condition and n, but also affected by mutual influence
氮素因子一般在水稻生長
的分蘗期就對水稻根際土壤微生物生態效應有顯著影響，到孕穗期，水分條件開始起作用，在成熟後期，水稻不僅受到水分條件和施
氮的影響，同時還受到水分條件和施
氮的交叉作用影響。
In combination with project example of the application of microporous aeration and carrousel 2000 oxidation ditch process in a municipal sewage treatment plant, the advantages and disadvantages of the process flow compared with others were described ; the basic principle of degrading organic substance and removing phosphorous and nitrogen by means of the process flow was analyzed ; the main design parameters and economic and technical indices for various structures were put forward
結合某城市污水處理廠採用微孔曝氣、卡魯塞爾- 2000型氧化溝工藝
的工程實例，闡述了該工藝流程相對于其它工藝流程
的優、缺點;分析了該工藝流程降解有機物及除磷、脫
氮的基本原理;並提出了該工藝流程中各構築物
的主要設計參數及技術經濟指標。
Study on removal capacity of nh 4 - n, no - 2 - n, no - 3 - n by chlorella vulgaris in recirculation aquaculture system
循環水養殖系統中小球藻對三態
氮的吸收能力研究
The oxides of nitrogen can have deleterious effects on materials, vegetation, and animal and human life.
氮的氧化物對物質、植物、動物和人類生活有毒害效應。
In order to prove the anti - fatigue function, we do the experiment of mouse swimming with a heavy burden, the test of lactic acid, the test of lactic acid deoxidizing enzyme and the test of serum urea nitrogen respectively
為正實抗疲勞功能，分別作了蛇精口服液小鼠負重遊泳實驗，乳酸
的測定，乳酸脫氧酶
的測定，血清尿素
氮的測定等四個項目試驗。
Soil improvers and growing media - determination of nitrogen - dumas method
土壤改良劑和生長劑.
氮的測定. dumas法
Among the blue-green algae are many species of nitrogen fixation.
許多種藍藻有固
氮的能力。
Mycorhizae perform the function of nitrogen fixation and storage.
菌根起著固氮和貯氮的作用。
