环

The qualified 10B naphthenic type rubber filling oil is developed by taking hydrodeacidifying oil from Liaohe naphthene base vacuum cut 2 as raw oil.

经过实验室研究，以辽河环烷基减二线加氢脱酸油为原料，生产出合格的 10B高级环烷型橡胶填充油，产品通过了岳阳石化橡胶厂使用评定，10B高级环烷型橡胶填充油可以作为填充油生产SBS充油胶。

In order to reconstruct the state variables precisely, the observers pole is placed on the negative real-axis in the complex plane and in the flat range on the curves.

由小车吊重开环系统动力学特性和开环系统的极点在复平面的分布形态，开环系统本身是不稳定的。

objective: value the no tention hernia ring padding neoplasty in treating inguinal hermia.method: retrospectively analysize the clinical data of the no tention hernia ring padding neoplasty.result:the average time of the neoplasty is 40 minutes,the patients can make out-of-bed activity ,whom were treated after 6 hours.all of the patients were free of infection.2 patients felt foreign body sensation in inguinal groove and 1 person felt benumbed.conclusion: no tention hernia ring padding neoplasty is a valuable type of neoplasty,which operates simply,and the patients can get little injury ,rapid recovery and low relapse rate.

目的：探讨无张力疝环填充式修补术在腹股沟疝手术中的应用价值。方法：对30例腹股沟疝患者行无张力疝环填充式修补术后的临床资料进行回顾性分析。结果：手术时间平均40 min，切口疼痛2 d～7 d，术后6 h下床活动，无感染病例，腹股沟异物感2例，麻木1例。结论：疝环填充式无张力修补术是一项更符合生理解剖结构的治疗技术，操作简单，损伤小，恢复快，复发率低。

Based on chapter two, In chapter three, the method of multiple scales is introduced to the study of the multiple-dimensional nonlinear stochastic systems under random external excitation. Using method of multiple scales, we strictly deduce the equation of modulation of amplitude and phase. The effects of random excitations are analyzed; numerical simulations verify the results. Theoretical and numerical simulations show that when the intensity of the random excitation increases, the nontrivial steady state solution may be changed from a limit cycle to a diffused limit cycle.

在第二章基础上，第三章将多尺度法引入到相应的随机系统的研究中；严格推导了系统的约简方程，用矩方法求出稳态解应满足的方程，获得一些结果；并且数值模拟结果与理论推导的结果是一致的；并注意到，与其对应的确定性系统相比较，系统响应从周期解变为近似周期解，系统的相轨线从极限环变为扩大的近似极限环；随着激励带宽的增大，此扩大的近似极限环的宽度将增大。

The quadrupolar ring's temperature field is studied numerically by finite difference method, its null drift is analyzed at given temperature circumitance.

通过有限差分法，对光纤环的Shupe效应作了研究，对四极子光纤环在非稳态传热的过程中的温度场进行数值求解，分析了光纤环在试验提供的温度环境下的温度零漂。

Support has been provided for that annulus fluid instances were numerical simulated with PHOENICS, PHOENICS is used to set up a numerical model of power-law fluid in a concentric annulus flow, by comparing the numerical simulation results for the axis velocity of the power-law fluid in a concentric annulus flow with two dimensional PIV experimental results.

为应用PHOENICS数值模拟环空管道内其它流体情况提供借鉴，利用PHOENICS建立幂律流体环空流动的数值模型，将同心环空幂律流体轴向速度数值模拟结果与二维PIV实验结果对比。

Epoxides, episulphides and ethylene imines also polymerize via similar cyclic onium ion mechanisms.

环氧化合物，环硫化合物和乙烯亚胺也可以按类似于环氧？睦胱拥幕？理进行聚合。

Epoxides, episulphides and ethylene imines also polymerize via similar cyclic onium ion mechanisms

环氧化合物，环硫化合物和乙烯亚胺也可以按类似于环氧？

The plans of controlling the PMSM include the open-loop control and the close-loop control. The open-loop timing control system has no feedback of the current and the position.

永磁同步电机的控制方法分为开环和闭环，开环调速系统不需要进行速度反馈或位置反馈，故系统结构简单、易于控制。

Simulation results show that the performance of the open-loop control system is poor when the model parameters change. The second system is designed via feedback linearization method. Since the path signal is introduced as feedback signal, the designed closed-loop control system improves the system robustness to the parameter perturbation. Simulation results verify that the closed-loop control system shows better performance than the time optimal control system.

前者侧重于时间最短的控制性能，但由于是开环控制，当出现参数摄动时，系统的性能会受到较大影响；后者由于引入了飞艇轨迹的反馈信号，因而相对提高了系统对参数摄动的鲁棒性，计算量较小，并且仿真结果证实了这种闭环系统设计方案可以抑制参数摄动带来的影响，与时间最优开环控制系统相比，显著提高了控制精度、改善了控制效果。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。