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In this model the fuse is simulated by a time variable nonlinear resistor combined with a switch, the nonlinear resistor represented the fore-arc resistor during fusing process, the switch is used to control the cut off time, and both of the above is calculated by the ANSYS. Compared the real assay curve and the simulation wave we found that: the calculated overvoltage amplitude value is accuracy with error less than 5%.But the wave is more or less different especially the part of the post-arc.

在电磁暂态计算程序——EMTP/ATP中，根据实际情况建立了熔断器开断试验电路的仿真模型，其中熔断器模型采用一个时间变量非线性电阻和开关的组合来代替，前者代表熔断器熔断过程的弧前电阻，后者控制开断时间，两者均由ANSYS计算得到。

This error was particulary magnified by the fact that by the time of Yalta we already had japan beaten.

到雅尔莲协定时，我们算是已经把日本打败了，由这事实看来，那错误尤为显著。

The results show that NPP is larger in June and July than other growth periods, grass LAI and NPP change rapidly from May to June. Estimated error of 44 cases by the biomass model is less than 20%, which show that the biomass model is very good , the model can describe growing status. Photosynthesis and respiration are different because of different type grass , three types grass are more adaptive to desert environment and the biomass are also big, the grass types include Alhagi sparsifolia, Lycium ruthenicum and Reaumuria songarica. The grass biomass is influenced by many factors such as grass type, total cover and plant height et al.

结果表明，2005年牧草生长期内NPP的变化基本是6、7月份最大，其它月份较小，5～6月份是牧草叶面积变化比较大的时期，也是NPP变化比较显著的时期；生物量模型估算得到的44个样本的生物量误差基本都小于20%，说明模型能够反映牧草的实际生长状况；不同荒漠牧草对光的利用能力和对CO2同化能力有很大差异，骆驼刺、红砂、黑果枸杞是荒漠牧草生物量较大的牧草类型；牧草类型、牧草盖度以及平均高度是造成不同牧草产量相差较大的重要原因。

The differences between the experimental and theoretical binodal curves might be caused by the error of the interaction parameters applied and by the neglect of the concentration dependency of g13 . Key word: Interaction parameters; Flory-Huggins; phase diagram

实验上观察到的液/液相分离现象与理论运算上所得到的结果趋势吻合，但实验点与理论所得到的binodal curve 有些误差，判断乃是由於作用力参数值估算误差，及未考虑g12 的浓度相关性所造成。

The analysis of dynamic performance of the overall system is performed by using Lyapunov method, which proved that by using the proposed method uniform ultimate boundness of close-loop error is guaranteed under certain conditions.

使用Lyapunov方法对整个系统的动态性能进行分析，证明了在一定条件下此方法能保证闭环误差及网络权值一致最终有界。

The factors affect on the degree of substitution of product, yield and apparent viscosity, such as the mol rates of EPTAC with -NH2, reaction temperature, reaction time and the content of water in system have been discussed in detail. FTIR spectrometer and UV spectrometer are used to characterize the structure of the derivative and it is proved that substitution reaction mainly occurs on the -N element .The particle size and morphology of chitosan and quantemary ammonium salt of chitosan are analysised by comparing photos of their scanning electron microscope. The degree of substitution of HACC is determined by acid -base conductometric titration. An error in current formula of DS has pointed out and a correct formula has presented.On the base of experience of above experiment, the reaction conditions of HACC were systematically investigated through orthogonal design, and then the best conditions are found. Water-solubility and dependence of pH are studied.

壳聚糖和环氧丙基三甲基氯化铵在异相条件下发生反应，通过单因素实验，制备了一系列不同性能的壳聚糖季铵盐，本文首次详细讨论了反应条件(反应摩尔比、反应时间、反应温度、水含量)对产率及产物性能的影响；用红外光谱和核磁共振对结构进行表征分析时，发现季铵盐阳离子基以N位上取代为主；通过电镜图片对壳聚糖和季铵盐衍生物外观形貌进行对比，采用酸碱电导滴定法测定产物的取代度，并对常用取代度公式做了修正。

Alternating Direction Implicit-Finite Difference Time Domain is unconditionally stable and the maximum time step size is not limited by the Courant stability condition, but rather by numerical error.

摘要基于交替方向隐式技术的时域有限差分法是一种非条件稳定的计算方法，该方法的时间步长不受Courant稳定条件限制，而是由数值色散误差决定。

The invention selects hypo- sensitive absorbing line of metal to be measured to analyze by the atom absorbing spectrometer, so alloy sample metal salt solution is diluted for direct analysis, so error induced by dilutedness can be decreased greatly, operation is easy, fast and accuracy is high.

本发明选择待测金属元素的次灵敏吸收线进行原子吸收光谱仪分析，因此无需对合金样品金属盐溶液进行高倍稀释，就能直接分析，因而可以大大减小由稀释放大的误差，操作简便、快速，准确性高。

The glyoxal and glyoxalic acid contents in the solution of oxidation of acetaldehyde to glyoxal by nitric acid were determined by this method, the repeatabilities of analysis results were excellent and the relative error compared to chemical analysis of glyoxal was 1.77%.

用HPLC测定乙醛硝酸氧化法制乙二醛反应液中乙二醛和乙醛酸的含量，结果的重复性好；对乙二醛的测定结果与应用化学分析法测定结果的平均相对误差为1.77%；对反应液中乙二醛、乙醛酸含量的测定有着较高的加标回收率，分别为99.6%～103.3%和98.1%～102.4%。

Based on the principle of current meter measurement, this article makes analysis on the influence of measured discharge by measurement distance and width error caused by hydrometric cableway counter.

从流速仪测流的原理，分析由水文缆道计数器而产生的测距、测宽误差对实测流量的影响，进一步说明水文缆道计数器率定与比测的必要性，并结合实际提出缆道计数器率定前实测流量的校正方法。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷