级数

The Volterra series expansion has altitudinal nonlinearly ,most nonlinear system can be expressed by the Volterra series expansion.

而Volterra级数展开式具有高度非线性，大量的非线性系统可以由Volterra级数表征。

By measuring the vapor-liquid equilibrium of ethanol- hexamethylene -NaI and verifying the data by means of ternary Gibbs-Duhem equation,the data of the vapor-liquid equilibrium of ethanol- hexamethylene -NaI were in agreement with both criterions.

假定NaI的平均活度系数可表示为盐浓度平方根(m1/2)的幂级数，采用全部合格的汽液平衡数据拟合出幂级数中的各项参数，从而获得在双液比固定条件下盐在非水混合体系中的活度系数。

Investigators enrolled 34 patients having painful neuropathy for at least six months, as confirmed by electrophysiologic tests. Previously prescribed pain medication was tapered during a one-week prestudy period, during which the median pain rating was at least 4 on a 0- to 10-point scale.

研究员挑选34位经电流生理学检验确认为罹患至少6个月以上神经性疼痛之患者加入研究，于研究开始前一周，逐渐减少疼痛药物的使用量，于此间，疼痛级数中位数约为4 (疼痛级数分等从0至10级)。

Investigators enrolled 34 patients having painful neuropathy for at least six months, as confirmed by electrophysiologic tests. Previously prescribed pain medication was tapered during a one-week prestudy period, during which the median pain rating was at least 4 on a 0- to 10-point scale.

研究员挑选34位经电流生理学检验确认为罹患至少6个月以上神经性疼痛之患者加入研究，於研究开始前一周，逐渐减少疼痛药物的使用量，於此间，疼痛级数中位数约为4 (疼痛级数分等从0至10级)。

In order to obtain the order of reaction between propanone and iodine, colorimeter sensor can be used. The variation of transmittance and absorbance can be fed into the computer. The statistics wizard of the software can perform linear fitting of the data. The order of reaction can then be calculated through the manipulation of the line slope and y-intercept. Download Teachers' Notes

至於研究丙酮与碘的反应级数方面，则可利用比色计感应器，反应时混合物的吸光度和透射比数据均可传送到电脑，利用软件所提供的统计精灵更可以把数据进行图线分析，从所得的直线斜率和Y轴截距等有关资料便可计算出反应级数。

This method is tectonic on foundation of nuclear function theory special and linear space, each issue of rank nucleus of progression of the Volterra that seek solution changeover uses output observation vector to be in to beg Xierbaite the some in the space child the umbriferous problem on the space, make originally complex, hard calculative is nonlinear in the approachs a problem to be built in place compose linear space of Volterra progression of the system solve ably with the means that accumulates inside vector, gave out specific algorithm.

该方法在核函数理论基础上构造非凡线性空间，将求解Volterra级数的各阶核的新问题转换为求用输出观测向量在希尔伯特空间中某一子空间上的投影新问题，使原本复杂、难以计算的非线性系统的Volterra级数的逼近新问题在所构建的线性空间中巧妙地以向量内积的方式解决，并给出了具体算法。

started with the analysis of characteristic parameter of the successive detection logarithmic amplifier,mainly discusses the main factor affecting its transfer characteristic by mathematics reasoning to its transfer function,studies the correlative relations of the single stair′s plus,the series with the dynamic range and the logarithmic precision by matlab and matrixx simulation.so two pieces of conclusion have been reached:one is on condition that the dynamic range is limited,the more the series that is used and the single stair′s plus is less,the higher the logarithmic precision is.the other is that using the double amplifier chain can enhance the logarithm starting point,so its stability is improved.and the conclusion has been applied to the practical circuit′s analysis of the tacan beaconing receiver.

摘 要：从分析连续检波式对数放大器的特性参数入手，对其传输函数进行了数学推导，重点讨论了影响其传输特性的主要因素，通过matlab和matrixx仿真，研究了输入动态范围与级联级数、单级增益和对数精度的相互关系，得出了两点结论：一是在限定动态范围的前提下采用的级数越多其单级增益越小而精度就会越高，二是采用双放大链结构可以提高对数起点，从而提高其稳定性。最后将结论应用于塔康信标接收机实际电路的分析中。关键词：对数放大器；连续检波；塔康信标；对数精度

Property 1 If converges to ,then also converges, and

性质1 如果级数收敛于和，则级数也收敛，且其和为。

The results show that x does not change deuterating-dedeuterating reaction order. Activation energy increases while the rate constant decreases with x increasing. Deuterating and dedeuterating reaction order a (with respect to deutertium pressure) and b (with respect to deuterium content) are 2 and 1, 0.5 and 1, respectively.

研究结果表明，铝含量不改变合金的氘化与去氘化的反应级数；反应速率常数随x的增加而减少；活化能随x的增加而增加；氘化与去氘化反应级数 a和 b 分别为2和1及0.5和1。

The results show that the reactive characters of macro-kinetics are different from that of intrinsic kinetics under the same experimental conditions. The isobutene dimeric reaction follows 1.5 order reaction because of the effect of inner diffusion, and isooctane dimeric reaction follows zero order reaction.

结果表明，在相同的实验条件下，反应的宏观动力学行为与本征动力学行为有较大的不同，异丁烯的反应级数受内扩散影响由2级变为1.5级，异辛烯的反应级数则为0级。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。