查询词典 Ammonia

The phenomenon about water vaporization-induced ammonia volatilizing is verified, and it is studied quantitatively.

通过室内试验，进一步证实了土壤水分蒸发引发氨挥发的现象，并对水分蒸发引发氨挥发进行了定量描述。

The phenomenon about water vaporization-induced ammonia volatilizing is verified, and it is studied quantitatively.

此外，通过回归分析还建立了表征施入土壤中尿素转化为铵态氮的动力学型方程，其参数均与土壤水分、温度有关，并得到这些参数的水热耦合效应关系式。

It had closely relationshipbetween soil pH increasing and ammonia volatilizing losses after short period of ureaapplication.

尿素水解和硝化过程使土壤pH先升高后降低与施肥后短期内氨挥发损失有密切的关系。C：N比高的冬小麦秸秆显著降低了土壤〓-N、〓-N含量；C：N低的苜蓿秸秆显著增加了土壤〓-N、〓-N含量。

Experiments of soil leaching, ammonia volatilizing and州culture on maize were conducted to study the nitrogen releasing law and the biologic

脸研究自制竹炭包膜尿素的氮素释放规律和生物利用效果。声果竹炭包膜尿素县有一定的缓释性舱，其氮素的29 d累积淋出率比

The dynamics equations of soil water vaporizing and ammonia volatilizing hcluding the factors of water and temperature, and the dynamics-like equation of urea transforming into ammonium nitrogen in soil are founded in the paper, by taking the effect of interaction of water and temperature as subject, the dynamic change character of object studied as basis and using principle of chemical dynamic; The empirio-equations of soil water retention curve including temperature and the empirio-equations including temperature between water potential of millet seedling leaves and soil water are founded in order to make the equation of relation between water potential and water content in soil suit the demand of temperature change much better.

本文以水热耦合效应为主题，基于研究对象的动态变化特征，应用化学动力学原理，建立了含水、热因子以及水热耦合效应的土壤水分蒸发、肥料氨挥发动力学方程，以及施入土壤中的尿素转化为铵态氮的动力学型方程；为使水势—含水量关系式更好适应变温条件应用的要求，建立了含温度因子直接表征土壤持水曲线的经验方程，以及含温度因子的谷苗叶水势与土壤含水量关系经验方程。

The dynamics equations of soil water vaporizing and ammonia volatilizing hcluding the factors of water and temperature, and the dynamics-like equation of urea transforming into ammonium nitrogen in soil are founded in the paper, by taking the effect of interaction of water and temperature as subject, the dynamic change character of object studied as basis and using principle of chemical dynamic; The empirio-equations of soil water retention curve including temperature and the empirio-equations including temperature between water potential of millet seedling leaves and soil water are founded in order to make the equation of relation between water potential and water content in soil suit the demand of temperature change much better.

本文以水热耦合效应为主题，基于研究对象的动态变化特征，应用化学动力学原理，建立了含水、热因子以及水热耦合效应的土壤水分蒸发、肥料氨挥发动力学方程，以及施入土壤中的尿素转化为铵态氮的动力学型方程；为使水势—含水量关系式更好适应变温条件应用的要求，建立了含温度因子直接表征土壤持(来源：A9eBC7b4b论文网www.abclunwen.com)水曲线的经验方程，以及含温度因子的谷苗叶水势与土壤含水量关系经验方程。

Having measured the crosslink density of vulcanizes in the atmosphere and ammonia,the types of crosslink density of vulcanizes are analyzed.

对改性的纳米二氧化硅分别用红外光谱和XPS进行表征，测定大气和氨氛围下硫化胶的交联密度，研究硫化胶的物理交联密度和化学交联密度对力学性能的影响，结果发现，随着纳米二氧化硅填充量的增加，总交联密度增大，当纳米二氧化硅填充量大于1。

The resultedα-methylamine was protected by acetyl chloride, and then was chlorosulfonated bychlorosulforic acid at -5℃-0℃followed by treatment with aqueous ammonia givingcompound A in 52.3% yield.

甲基胺再用乙酰基进行保护后，以HSO3Cl为试剂进行氯磺化反应，再用浓氨水进行反应，制得了乙酰基保护的苯磺酰胺类化合物。

Objective To understand the ammonia pollution level in indoor air in Chengdu city,China.

目的了解成都市新装修室内环境空气中氨污染的状况并探讨防治措施。

Effects of reaction time on SBET , pore volume, average pore diameter and coke over Co - ZSM - 5 zeolite under aldehyde - ammonia condensation were discussed.

本文在研究反应时间对醛氨缩合催化剂Co-ZSM-5分子筛比表面积、孔体积、平均孔径及积炭量的影响中发现，Co-ZSM-5分子筛催化剂的失活过程经历四个阶段：高水平活性稳定期、活性衰退期、低水平活性稳定期和二次活性衰退期四个阶段。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。