长方体

Discuss what features cubes have according to the features of cuboids and the cube models.

师：根据长方体的特征以及正方体模型讨论正方体有什么特征？

Now let's study cuboids by their faces, edges and points.

3下面我们就面、棱、顶点研究长方体。

Which of the following objects are cuboids or cubes ?

下面哪些物体是长方体或正方体？

Goals: To recognize the cuboids and the cubes ' faces

教学目标：认识长方体和正方体的面、棱和顶点。

Point to the faces, edges and points of the cuboids quickly.

要求全体学生起立，快速指出长方体的面、棱、顶点，如果指错就坐下。

What's different between cuboids and cubes?

长方体和正方体有什么相同点和不同点？

At the same time, cuboids water tank design also facilitates indoor space arrangement.

同时长方体水箱设计亦方便在室内空间摆放。

Which objects are cuboids? Which objects are cubes? Please give us some examples.

师：同学们举例说出哪些物体是长方体或正方体？

Referring to regular cuboids, two different performance functions are presented for irregular enclosures in this paper. The optimum voltages applied on PZT patches for active noise control are obtained by minimizing two performance functions.

参考长方体封闭空间的情况，本文在不规则封闭空间的有源消声中提出了两种控制目标函数，通过使控制目标函数最小化得到了有源消声控制电压的最优值。

The robot saves motion time and its move speed is higher than that of general crawling inside pipe line robots This thesis analyzes the pass ability of robots in bent tube and three-limb tube. and give the maximum volume of cylinders and cuboids.

本文分析了机器人在弯管和三通管内的通过能力，给出了圆柱体和长方体在三通管内转弯时的最大体积，当机器人的长度确定以后，可以计算出允许通过三通管的机器人最大截面尺寸，为可以通过三通管的机器人设计打下了基础。

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。