多周期的

It shows that it is possible to increase the start oscillation length by tailoring magnetic field's amplitude and its period without changing the synchronous condition of the fundamental wave; in the meantime, when there are two or more azimuthally asymmetric space harmonics in the high power broad-band helix TWTtraveling wave tu...

与此同时，对起振长度、初始非同步速度参量随皮尔斯增益参量、空间电荷参量、损耗参量等的变化，以及在超宽带行波管中当存在两个或多个角向非对称空间谐波时，起振长度、初始非同步速度参量随周期永久聚焦磁场的变化进行了研究。优化设计聚焦磁场、电子注和螺旋线慢波系统的参量可以对螺旋线行波管的稳定性分析提供必要的依据。

When 3 mmol·L-1 crocin treated T24 cells for 48h, the difference was significant compared with the control group ( P .05). Crocin induced wide changes of the gene expression profile of T24 cells. A total of 836 genes were up-regulated or down-regulated by more than 2 times, which were involved cell cycle controlling, DNA cell apoptosis, replication factor, and so on.

基因芯片检测发现3 mmol·L-1藏花素作用T24细胞48 h引起该细胞系基因表达谱广泛地改变，其中表达差异2倍以上的基因共836个，这些差异表达基因的功能涉及多个方面，最为明显的是与细胞生长调节相关的细胞周期调节基因、细胞凋亡调控基因、DNA复制相关基因等类型。

In the former stage, Based on the concept that both glottal excitation and vocal tract parameters are time varying in amplitude and frequency, we detect pitch with frequency domain transform

在波形合成阶段，以基音频率轨迹为依据，将混叠语音信号分割为独立的短时周期信号，利用数字多谐振荡器的选频特性，获取相应的各次谐波的频率、幅度以及相位信息，利用这些参数在频域叠加来合成

Studies the high precision estimation methods of echo frequency, proposes a simplified TLS-ESPRIT method for frequency estimation based on uniform sampling data. For moving platform, such as torpedo, proposes a time fusion algorithm for target status estimation based on multicycle data of single sensor.

c。深入研究了回波信号的高精度频率估计技术，提出了一种基于均匀采样数据的TLS-ESPRIT频率估计算法；针对运动平台，提出了一种单传感器多测量周期目标状态估计的时间融合算法；以炸点预测为例构造了相应的状态模型及算法，计算机仿真验证了融合算法的有效性。

Through adding new state variable and using supplement functions,the problem with restriction conditions was converted into nonrestriction problem.

通过增加新的状态变量和用补偿函数法，将本课题的有约束条件问题化为无约束条件问题，并提出了最优步长参数的动态搜索法来修改传统的梯度法，从而较完善地解决了多变量最优周期控制的计算问题。

Through adding new state variable and using supplement functions,the problem with restriction conditions was converted into nonrestriction problem.In addition,the dynamic searching method of optimal step coefficient was developed to modify the conventional gradient method,consequently the calculation problem of the multivariable optimal periodic control was able to be resolved better.

通过增加新的状态变量和用补偿函数法，将本课题的有约束条件问题化为无约束条件问题，并提出了最优步长参数的动态搜索法来修改传统的梯度法，从而较完善地解决了多变量最优周期控制的计算问题。

The results show that the heterostructure photonic crystal can extend remarkably the photonic bandgap compared with the periodic structure;a defect is inserted into the heterostructure photonic crystal,the nontransmission band is wider than that of the symmetric structure without heterostructures,(1H1L)_m(1H)_n(1L1H)_m.

结果表明，与周期结构相比异质结构光子晶体可以显著地拓宽光子晶体的光子带隙；在该文提出的结构中引入缺陷，与(1H1L)m(1H)n(1L1H)m光子晶体相比，产生缺陷模式光子带隙范围明显拓宽，适当调整缺陷层的数目、位置和厚度可得到多通道滤波；并研究了实际操作中随机误差带来的影响，随无序度的增大，其带宽基本不变。

This perhaps is what will offset the problems of the toxic circumstance underlying this technological era as more ascend as a result of the sharing of this information, catapulting earth into a cycle of self healing ahead.

这也许是对今天技术时代下有毒环境的一个弥补，因为这一信息的分享将带来更多的提升结果，从而大力推动地球进入前方的自愈周期之中。

Their sleep cycles are different and their need for sleep is more up to 9 and a half hours.

他们的睡眠周期不同，他们的睡眠需要更多的--达到 9 个半小时的时间。

This paper,to more complicated stock product,makes use of martingale measure and the method of stochastic analyse,gives the mult-factor pricing model of convertible bonds with redeemable clauses ,combines the actual circumstance of market disburses dividends,discusses the martingale pricing of n-factor convertible bonds with periodic dividends,and induces the pricing formula.

针对较为复杂的股票产品，利用鞅测度和随机分析的方法给出了附有回购条款的可转换债券多因素定价模型，并结合市场分红的实际情况，探讨了在周期付红利下n-因子可转换债券的鞅定价，且给出了价格公式

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。