三次

We give the computing results of Maple programs by using the adjoint operator method.

利用共轭算子法和逐项消去法等规范形理论研究了含有三次非线性项的四维系统的规范形，给出了利用Maple符号推导程序所得到的计算结果。

The adjoint operator method and the theory of normal form are used to investigated the normal forms in the four dimensional nonlinear systems with cubic nonlinearities. We give two methods to compute the normal form for the four dimensional nonlinear systems. The corresponding Maple programs are also given in the appendix. The results obtained in this dissertation have a completely agreement with the results obtained in other papers.

利用共轭算子法和规范形理论研究了含有三次非线性项的四维系统的规范形，给出了计算四维非线性规范形的两种算法，给出了相应的Maple符号推导程序，所得到的结果与其它文献所得结果完全一致。

But on his third advance the man realized that he was facing a mirror.

但在第三次往前走的时候，他意识到面前有一面镜子。

I have travelled in an aeroplane on three occasions.

我坐飞机旅行已经三次了。

In 2004, he became the third African American since Reconstruction to be elected to the US Senate.

2004年，他成为美国的第三次非洲重建以来当选为参议员。

Humour– to agree with sb's wishes, even if they seem unreasonable, in order to keep the person happy: She thought it best to humour him rather than get into an argument.

有两三次，在父亲旁边，欣德利嘲笑，而使得老人家火冒三丈，抓起拐棍就要揍他，由于没有打着老人气得浑身颤抖。

Humour – to agree with sb's wishes, even if they seem unreasonable, in order to keep the person happy: She thought it best to humour him rather than get into an argument.

有两三次，在父亲旁边，欣德利嘲笑，而使得老人家火冒三丈，抓起拐棍就要揍他， www.ddd§tt.com 没有打着老人气得浑身颤抖。

Most of the planes and pilots belonged to the Air Transport Command, and some men flew as many as three round-trips a day.

大部分的飞机和飞行员都隶属于空运司令部，其中的一些人要一天来回飞三次。

In the middle of it lays a narrow tunnel, built as an air-raid shelter by Lin Biao. By that time, Chinese people were worried about the breaking out of the third world war. The oil paintings created in the revolution time was hung on the wall.

院子中间有窄下的通道走下去，那是林彪修建的防空洞——那是一个中国人担心第三次世界大战随时爆发的年代。

Three cold airstream snowstorm processes happened in Dec. in 2005 have been analysed and simulated by WRF model.

对2005年12月发生在山东半岛北部威海地区的三次冷流暴雪过程进行了分析研究，用WRF模式进行了数值模拟。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。