活动中心

They controlled religious activity in Nubia from the major centres of Dongola, Faras and Qasr Ibrim.

他们控制的乌姆卡斯尔Ibrim宗教活动，法拉斯和努比亚的主要中心的栋古拉。

The interaction between proteins and nucleic acids is one of the key issues in molecular biology.

蛋白质与核酸的相互作用是分子生物学研究的中心问题之一，它是许多生命活动的重要组成部分。

Through Experience economic era regards serving as the stage , goods as the props , consumer as the centre. Create the characteristic that can make the consumer participate in the economic activity on one's own initiative .Discuss the new request put forward toward advertising form of economic development.

通过体验经济时代以服务为舞台，以商品为道具，以消费者为中心，创造能够使消费者主动参与经济活动的特点，讨论经济发展对广告形式所提出的新的要求。

Teachers will do student evaluations once every two weeks to determine if a student is to be upgraded.

小班授课利于教师分析学生的个性特点，以学生的兴趣和需要为出发点来设计和开展教学活动，学生有更多的机会处于教学的中心地位

In order to locate direct singular positions, we begin by expressing the determinant of the Jacobian matrix Jx in terms of position of the center P of the moving platform. The Z and the Y coordinates of P may be chosen from the workspace, then the determinant of Jx is now a six order polynomial of X, the x coordinate of P. The direct singular positions corresponding to are obtained by solving the polynomial equation, and retaining all real roots in the workspace.

由速度分析的Jacobian矩阵Jx，将其行列式值表示成活动平台中心点P位置的函数，寻找奇异位置的方法是先假设平台高度，再假设工作空间内P点的Y座标，使Jx行列式成为P点X座标的六次方程式，求解方程式并保留在工作空间内之实根。

Later developments of organum occurred in England, where the interval of the third was particularly favoured, and where organa where likely improvised against an existing chant melody, and at Notre Dame in Paris, which was to be the centre of musical creative activity throughout the thirteenth century.

这之后奥尔加农的发展发生在英格兰，在这个地方三度音程尤为受欢迎，并且有可能是对现有圣咏旋律的即兴创作，在十三世纪期间，巴黎圣母院成为音乐创作活动的中心。

It is a centre for outdoor activities.

这是以户外活动为中心的湖。

The observations reveal warm (320 K) dust in a structure 2.1 parsec thick and 3.4 parsec in diameter, surrounding a smaller hot structure.

观测显示，在NGC 1068中心的尘埃圆环面原来是一个比较热的（320 K）的致密结构，直径约几个光年，它阻断了我们的视线，使我们无法看到该星系最里面的活动区域。

It is an active galaxy lying at the centre of the Perseus Cluster of galaxies.

它是个位于英仙座星系群中心的活动星系。

The cultural tradition of whole Europe and the philosophical trends of his time were the theoretical bases that produced his thoughts of economic ethic, especially physiocracy and David Hume and Francis Hutcheson and Bernard Mandeville brought about a direct influences upon his thoughts.

正在形成和发展中的自由主义把维护个人私有财产，排除他人、国家和社会对个人的一切正当活动的强制与约束放在首位；个人主义强调个人利益、个人价值的中心地位，认为个人本身才是目的，而社会只是达到个人目的手段。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。