级数的

Some sufficient conditions for existence and uniqueness of periodic solution to Duffing equation are obtained using trigonometrical series and contraction mapping.

利用三角级数理论及压缩映射原理，研究时滞Duffing型微分方程，给出此类方程存在唯一周期解的几个充分条件。

A SONET term describing the manner in which channelized DS- 0 level data is mapped into the SONET frame.

一种 SONET 术语，描述了一种将信道 DS- 0 级数据被映射为 SONET 帧的方法。

When handling the problem of mapping accuracy, the convex-concave expansion technology for Taylor series expansion is adopted.

根据复变函数共形映射理论，讨论Schwarz-Christoffel积分变换的正反求解过程；应用Taylor级数凸凹分级展开技术，处理映射精度问题。

This phenomenon often appears when codebook size is large. That caused the performance of large size codebooks reduces evidently.

这说明ICA变换能够大幅度提高正确率，但由于LBG算法存在缺陷，使得ICA_LBG算法在大的量化级数时性能下降。

This paper has introduced several new criterions for the convergence of series.

摘要本论文给出了级数收敛判别的几种新方法。

Three MERIS FR Level 1b scenes acquired over The Netherlands in April,July and August 2003 were used to derive fractional composition of the main land cover types present in The Netherlands.

利用4月、7月和8月三期MERIS FR1b级数据得到荷兰主要土地覆被类型的组成权重。

Each Power Series sub features more cone area than that found on competing subwoofers of the same size.

每一分幂级数功能更锥面积比发现，竞争低音的大小相同。

With differential method and integral method, kinetic parameters of the transformer oil were obtained.

利用微分法和积分法分别计算比较变压器油样的动力学参数（活化能、反应级数和指前因子）。

Series solution for scattering of plane SH waves by a canyon of circular-arc cross section .

圆弧形凹陷地形对平面SH波散射问题的级数解答。

Using the mixture of acetic acid and cyclohexane as solvent, the effects of factors such as amount of solvent, ozonolysis temperature, ozonolysis time, amount of reductant and reduction decomposition time on reaction results were examined.

考察了溶剂、臭氧化时间、还原剂用量、还原分解时间和还原温度对反应结果的影响，初步探讨了臭氧化反应级数。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。