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Plates of globular cluster M3, taken with the 40cm refractor at Sheshan station of Shanghai Astronomical Observatory, are used by this work. The difference of epoch of these plates is up to 81years. The positions and absolute proper motions of 24 stars in ACT catalogue, which links with the Hipparcos Catalogue based on the International Celestial Reference System, are used as the reference frame. Using the central overlapping principle, the absolute proper motions of 534 stars in the region of about 100'×100' around the cluster are determined. After the membership determination of the stars which based on the data of proper motions, average absolute proper motion components for the cluster of -0.3±0.3 mas/yr in R.A.

本文使用上海天文台佘山40厘米折射望远镜拍摄的14张最长时间跨度为81年的球状星团M3底片的PDS扫描结果，使用与 Hipparcos星表相联系的基于国际大球惯性参考系的ACT星表中的 24颗恒星的位置和绝对自行为参考架，用中心重叠法进行天体测量归算，得到了这个星团中心附近100'×100'天区内534颗恒星的位置和绝对自行，并利用这些自行对成员概率进行了估算，得到这个星团的赤经方向绝对自行为- 0.3±0.3mas/yr，赤纬方向绝对自行为-3.1±0.3mas／yr。

We can have a lot of time in the library.

我们可以有很多时间在图书馆。

Tons storage capacity has a constant temperature preservation of library and more than 1000 square meters of vegetable processing workshop.

拥有8000吨储藏能力的恒温保鲜库和1000多平方米的蔬菜加工车间。

There is a fund of information in our school library.

我们学校的图书馆有丰富的资料。

You can use the library in a 'a la carte' mode.

您可以使用一个'点菜'模式库。

With a built-in wraparound sofa, a secret door in the solid walnut library and distributed surround sound all over the home, this project is an ode to the 80s during which the building was erected.

由于内置的重叠沙发，一个坚实的核桃图书馆秘密门和分发各地环绕声家庭，该项目是在一定期间，该建筑建80颂歌。

The library can also be a good source of information.

图书馆也可以一个好的信息来源。

Your local library will be a useful source of information.

你们当地的图书馆就是很好的资料来源。

What impressed me most was the abbey library.

更令人难忘的是修道院图书馆。

Dumbledore absent-mindedly doodled in a library book and was surprised to find it beating him on the head.

图书馆禁书区的那本尖叫书很有可能是由于被施了魔法而在被人打开时发出尖叫。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。