1.
In this article, the center conditions, isochronous center conditions and bifurcation of limit cycles at infinity for a class of fifth system are investigated.
研究一类五次系统无穷远点的中心、拟等时中心条件与极限环分支问题。
2.
Shanghai Region:Social Evolution from Equality to Hierarchy;
由平等时代到等级时代——以上海地区为中心
3.
Research on Operational Mechanism of the Collegial Virtual Research Center;
高等学校虚拟研究中心的运行机制探讨
4.
English Verb Tense in the Subjunctive Mood: From the Psychological-Distance Perspective;
英语虚拟语气中的动词时态：心理距离视角分析
5.
Computer Simulation of Plasma Sheath Evolution in Plasma Source Ion Implantation;
等离子体源离子注入过程中鞘层时空演化的计算机模拟
6.
Carbide Transformation Rule of 12Cr1MoV Steel Serviced for Long-Term at High Temperature Studied by Isothermal Aging Simulation
等温时效模拟研究12Cr1MoV钢在长期高温服役过程中碳化物的转变规律
7.
Limit Cycles and Generalized Isochronous Centers for Polynomial Differential Autonomous Systems;
多项式微分自治系统的极限环与广义等时中心
8.
Generalized Center, Isochronous Center and Bifurcation of Limit Cycles for Several Classes of Planar Differential Systems
几类平面微分系统的广义中心、等时中心与极限环分枝
9.
Effects of Valsalva manoeuvre on central haemodynamic response to
乏氏动作对冠心病患者等长收缩运动时中心血流动力学的影响
10.
Simulation and analysis of the population density of the Shanghai central city in 1990-2000;
1990—2000年上海中心城区人口密度模拟与时空变化分析
11.
Sometimes they imitate a turtledove picking up grain.
有时他们模拟"斑鸠吃谷子"等形象。
12.
The Hasselblad H2 camera is the finest medium format dual-platform camera on the market today, handling digital and analogue capture with equal ease.
哈苏H2是目前市面上最精细的中等格式双平台相机,在数字和模拟的拍摄上都同样得心应手。
13.
virtual CPU time
中央处理机虚拟时间
14.
To wait for further developments.
等待时机，耐心等待等待更进一步的发展
15.
By the time the torch reaches the central stadium, the flame will have journeyed all 50 states.
等到奥运会火炬到在中心体育馆时，这圣火将已传遍了全部50个州。
16.
You can login to your account now or when you enter the Study Center.
登录--现在你便可以登录你的帐户，或者等到进入“学习中心”时再登录。
17.
Several Classes of Bifurcations of Limit Cycles and Isochronous Centers for Differential Autonomous Systems;
微分自治系统的几类极限环分支与等时中心问题
18.
A Talk on the Development of Higher Education of Anshan City from the Perspective of "University-Center Theory" in Knowledge-Oriented Economic Era;
从知识经济时代“大学中心地位说”谈我市高等教育发展