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Pig iron is useful because it can be formed into solid, heavy objects or objects with unusual shapes.

生铁用途很广，它能被加工成各种固体形状，特别是一些非常规的形状。

As described above, animated objects may be represented symbolically using graphical objects or scan-converted pixmap images.

如上所述，可以用符号图形或扫描转换后的痊图来表示运动的物体。

This dissertation summarizes all kinds of topological relationships and spatial operations, and uses the conception realms to design the data structure of spatial region objects, and devises the red、blue planar graph algorithm, and makes use of red and blue sweep-line algorithm to implement the spatial topological analysis operations on layers of region objects. At the end, further works and improvements are presented.

本文 对空间拓扑分析操作进行了归纳总结，并且基于 Realms 概念探讨了空间区域对象的数据结构以及红蓝区域平面图算法，文章详细讨论了针对双层红蓝区域对象的各种空间拓扑分析算法的实现，最后是该类问题的进一步改进和构想。

Other stories spoke of poltergeist effects such as objects being thrown around the house and objects of the dead person mysteriously moving.

其他的故事还讲述了鬼怪的恶作剧，如房子里的东西被扔来扔去，及已故的人的东西神秘地移动。

You can customize these prebuilt objects and you can also build your own custom objects that allow you to store information unique to your organization.

你可以自定义这些预置对象，也可以构建自定义对象，允许你存储应用程序的信息。

Group primitive media objects in order to form compound media objects

系统定义了一个场景坐标系，然后可以指定组成该场景的媒体对象在该坐标系中的位置，并可设定用户观察该场景时所在的坐标位置，这些位置信息都会包含在场景的描述中。

Specified the kinds of objects to create using a prototypical instance, and create new objects by copying this prototype.

使用原型实例来创建所需的指定对象的种类，通过拷贝原型来创建新的对象。

The thermal distribution of objects can be transformed into the visual pictures by the infrared thermal imaging system and displayed on the monitor in grey level or pseudocolor, thus the temperature distribution of objects can be obtained.

利用红外热成像系统可将物体的热分布转化为可视图像，并在监视器上以灰度级或伪彩色显示出来，从而得到被测目标的温度分布场。

Practically all Python objects have a string presentation either evaluatable from repr( or '', or printable from str. The print statement automatically invokes the str function for an object. This gets even better. When you are defining your own objects, there are hooks for you to create string representations of your object such that repr and str (and '' and print) return an appropriate string as output. And if worse comes to worst and neither repr or str is able to display an object, the Pythonic default is at least to give you something of the format

事实上，所有的Python对象都有一个字符串表示形式（通过repr函数，''或者str函数来展现）。print语句自动为每个对象调用该对象的str方法，这种机制的一个额外的好处就是在你定义你自己的对象时，你可以利用这种机制定义repr(，str或者''或者print来为你的对象创建一种字符串表达形式，它可以在被调用时返回适当的字符串描述信息，这样即使在坏的不能再坏的情况下，repr或者str起码可以给你返回一个对象的信息，Pythonic方式的默认做法是起码给你返回想如下格式的信息

Planar and quadric objects are often used in computer graphics. They can easily be modeled and rendered because of their simple shapes, and so many objects are composed of them in our daily life.

镜面反射和折射场景的真实感图形绘制一直是计算机图形学领域具有挑战性的研究课题之一。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。