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- The center conditions and isochronous center conditions for a class of quasi-analytic systems were investigated. 摘要研究了一类拟解析系统的中心条件与等时中心条件。
- In this article, the center conditions, isochronous center conditions and bifurcation of limit cycles at infinity for a class of fifth system are investigated. 摘要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。
- In this paper, the center conditions and isochronous center conditions for a class of quasi-analytic systems are investigated. 摘要研究了一类拟解析系统的中心条件与等时中心条件。
- 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。
- The latest algorithm is used to derive the periodic constant when the infinity is used as a center, and the isochronous center conditions at infinity for the fifth system are demonstrated. 利用最新算法求出了无穷远点作为中心时的周期常数，给出并证明了这类五次系统无穷远点拟等时中心的条件。
- Center Conditions at the Infinity for a Class of Cubic System 一类三次系统无穷远点的中心条件
- He moved the table over to the center of the room. 他把桌子移到房间中心。
- The land is destined for a new shopping center. 这块地已被划作为营建一个新购物中心之用。
- His activities in London center around this spot. 他在伦敦的活动以这个地点为中心。
- The strikers paraded through the city center. 罢工队伍游行穿过市中心。
- A system of roads radiates from the town center. 一个道路网从镇中心向四面八方伸展出去。
- The new hospital will be sited at the city center. 新医院将座落在市中心。
- New York is a great financial center. 纽约是一个重要的金融中心。
- The center of the sun is exceedingly hot. 太阳的中心极其热。
- Our city is the industry center of the country. 我们城市是全国的工业中心。
- They made a detour to avoid the town center. 他们绕道而行,避开市中心。
- A circle without a center is inconceivable. 一个没有圆心的圆是无法想像的。
- We decided to skirt round the town center. 我们决心绕过市中心。
- To avoid the city center, turn right here. 如果要避开市中心，请从这里向右转弯。
- The company owns a famous department store in the center of London. 这家公司在伦敦市中心拥有一家很有名气的百货商店。
