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If it were not for oxygen and nitrogen in the air, no man could live on the earth. 大气中如果没有氧和氮，人就无法生存于地球了。
The micropore diffusiviites of oxygen and nitrogen are obtained. 求得了氧、氮的扩散系数。
oxygen and nitrogen content 氧氮含量
With pressure deaeration, oxygen and nitrogen are extracted from the water by adding CO2. 进行压力脱氧时,水中的氧气和氮气成分会通过CO2的输入而被排除。
The determination of impurity Oxygen and Nitrogen in the metals of Neodymium and Dysprosium is studied. 研究了稀土金属钕和镝中杂质氧和氮的测定方法。
Specific leaf weight and nitrogen content had positive relation to the net assimilation rate. 比叶重和含氮量与净同化速率间存在正相关。
The determination of impurity oxygen and nitrogen in copper-chromium,coppermolybdenum and copper-wolfram alloys is studied. 研究了铜铬、铜钨、铜钼合金中杂质氧和氮的测定方法。
X-ray photoelectron spectroscopy (XPS) shows that the reason is the increase of oxygen and nitrogen polar functional groups on the surface. 射线光电子能谱(XPS)分析表明,这是由于涤纶表面被引入了大量含氧和含氮极性基团所致。
Wettability improvement is due to surface roughness and introduction of functional groups including oxygen and nitrogen. 增加表面粗糙度和引入含氧、含氮高结合能官能团是改善材料表面润湿性的主要原因。
This study dealt with the effects of maize, beet and soybean stubble remaining in field on soil enzyme activities, under the different temperature, moisture and nitrogen content. 摘要将玉米、大豆、甜菜三种作物根茬分别加入土壤中，在不同温、湿度条件和不同氮素水平下培养后，研究其对不同土壤酶的影响。
The first liquid oxygen and liquid nitrogen equipments in china are born in Hangyang,the oxygen liquefaction and nitrogen liquefaction equipmens are also. 国内首台液氧液氮设备和氧、氮液化设备均诞生在杭氧，伴随着新技术和新工艺的发展，我公司也不断地推陈出新，为用户度身订造，研制新品奉献市场。
Oxygen and nitrogen are gases. 氧和氮都是气体。
The product and emission of the CO 2 and CH 4 are related to soil organic carbon (SOC), dissolved organic carbon (DOC) and nitrogen content, meanwhile which are affected by the soil temperature and hydrological condition. 沼泽湿地CO2 和CH4的产生和排放与土壤有机碳、溶解有机碳及氮素含量有密切关系 ;同时受土壤温度和水文条件的影响 .
The results were showed as follows:panicle fertilizer was applied at 1.5 leaves from top(LFT),2.5 and 0.5 LFT,and 3.5,2.5 and 1.5 LFT could increase the chlorophyll and nitrogen content of higher effective leaves,and thus increased the rice yield. 结果表明 :倒 1 5叶 ,倒 2 5和 0 5叶 ,倒 3 5、 2 5和 1 5叶施肥提高了花后高效叶片叶绿素含量和含氮率。
Water content, gelatinization rate, starch content, fat content and nitrogen content of the fluidizing treated rice were analyzed, and compared to that of steam treated rice and crude rice. 该文对高温流化大米、蒸煮大米和未处理的原料大米就水分含量、糊化率、淀粉含量、脂肪含量、含氮量5个方面进行了对比测定。
The relative integral intensities of the ESCA core electron lines, oxygen and nitrogen to carbon, O18/C18 and N18/C18, are used to indicate the relative degree of grafting of acrylic acid (AA) and acryla-mide (AM) as monomers, respectively. 本文对表面接枝纤维用X射线光电子能谱(ESCA)进行分析测试,以谱中氮(或氧)原子1s内壳层电子和碳原子1s内壳层电子谱线的积分强度相对比值来表征接枝程度。
The relative integral intensities of the ESCA core electron lines, oxygen and nitrogen to carbon, O_1s/C_1s and N_1s/C_1s, are used to indicate the relative degree of grafting of acrylic acid (AA) and acrylamide (AM) as monomers, respectively. 本文用X射线光电子能谱(ESCA)对接枝纤维分析,以氮原子的1S壳层电子和碳1S壳层电子的峰积分强度之比值,N_(1S)/C_(1S),来表征产物的表面接枝程度,以傅里叶红外内反射光谱(FTIR)进行测定佐证。
It is found that plasma treatment can impart the acrylic fiber increased surface roughness and the improved hygroscopicity by the introduction of polar functions containing oxygen and nitrogen. 结果表明 ,腈纶纤维经等离子体处理后表面粗糙度增加 ,大量的含氧和含氮极性基团被引入到纤维表面 ,使纤维表面吸湿性能得到显著改善。
In the analysis of high purity gases (higher than 5N) by gas chromatography, peaks of oxygen and nitrogen impurities sometimes became negative, resulted in the failure of quantification. 摘要用气相色谱法测定5N以上的高纯气体时，有时氧或氮杂质的出峰方向变反，而无法对分析结果进行定量。
The paper introduces the main constitute,circuit and work principle of the oxygen and nitrogen purity analyser based on fuel battery,and predict courageously the application foreground. 介绍了研制的一种燃料电池式氧氮纯度分析仪的主要组成、电路及工作原理,并对其应用前景作出了大胆的预测。