This rationale is based upon the susceptibility of surface applied urea to volatilization , the primary mechanism of loss 其理论基础是尿素表施易引起氨挥发，这是其损失的主要机制。
In the end , the volatilization of kalman filtering due to the measure data is discussed , and some corresponding methods are presented 最后，对kalman滤波的发散问题进行了分析，并给出了相应的改进办法。
B2o3 could barrier the diffusion of o2 and na2so4 steam into interphase downwards of 1273k of volatilization temperature of b2o3 氧化硼在其挥发温度( 1273k )以下能够有效阻挡氧及部分硫酸钠蒸汽的进一步扩散，从而保护了纤维。
It is apparent that a high degree of ammonia volatilization and / or nitrate leaching can occur in cropping systems susceptible to previously described conditions 很明显，高的氨挥发和(或)硝态氮的淋失会发生在符合上述条件的任何种植制度中。
With the volatilization of solvent , the structures can chang from disc or hexagon to cube with the variety of environment and interior reciprocity 同时研究了稀溶液浇铸法制得的壳聚糖薄膜中液晶的精细结构和在内外因素综合影响下其结构随时间的变化。
Which showed that under inundation , with surface application and application - digging , the volatilization of nh3 was very strong in 7 - 10 days after fertilizer application , 表明在淹水条件下表施氮肥或将氮肥翻入土壤，在施肥后头7 ? 10天之内氨挥发相当强烈。
These large pools of ammonia are detrimental to seedling growth and are very susceptible to gaseous loss by volatilization before chemical conversion back to the ammonium and nitrate forms 这些氨的大量存在对幼苗生长产生危害，同时也很容易在转化为铵态氮和硝态氮之前挥发损失。
The effects of polymer concentration , solvent volatilization time , temperature and composition of coagulation bath and the thickness of membranes are studied for preparing the best nanofiltration membrane 实验重点考察了铸膜液固含量、溶剂蒸发时间、凝胶浴组成和温度、膜厚等因素对所制纳滤膜性能的影响。
The semi - automatic liquid nitrogen extracter is lowcost and easy - to - use , which can prevent the volatilization of the liquid nitrogen during the extraction 摘要介绍一种自制的半自动液氮提取器，该提取器制作成本低廉，操作简单，并可以避免治疗过程中提取液氮时液氮的大量挥发，从而可以减少资源浪费，降低治疗成本。
Author reformulate the mathematic model of engine to process the ecdp as the state parameters of model , expatiate on the prove of the filter stability , study the filter volatilization phenomenon by freezing k matrix and compensating the model by ecdp 建模时将ecdp的变化作为扰动考虑，经模型变换将其转化为线性模型的状态向量，对由此产生的特殊的滤波稳定性证明方法进行了阐述。
