管材矫正机 型式与基本参数 下载 pdf 百度网盘 epub 免费 2025 电子书 mobi 在线

　　本标准代替JB／T 1 109-1999《管材矫正机 型式与基本参数》。

本标准与JB／T 1109-1999相比，主要技术内容没有变化，只作了编辑性修改。

本标准由中国机械工业联合会提出。

本标准由机械工业冶金设备标准化技术委员会归口。

本标准起草单位：太原矿山机器集团有限公司。

前言

1  范围

2　矫正机的型式

3  矫正机的型号

4　矫正机基本参数

图1  交叉五辊

图2  2-2-2.1七辊

图3  2.2.2六辊

图4　3-1.3七辊

图5  凹凸辊

表1  矫正机基本参数

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We’ll skip over these simple proofs, because time is money, and money can buy you a blank notebook to try writing these proofs yourself.

remember that it all comes back to the basics. Everything relies on real numbers, topology, and sequences. If you can master those topics, the rest will be a breeze! Really.

My hope is that you learned more from this book than just how to prove that a sequence converges (you did learn that, right?). You learned how to think rigorously;

you learned how to deal with infinity, in cases where your intuition wouldn’t help (for example, with countability or series). Most of all, I hope you learned that going slowly

and understanding the definitions first can make all the difference.

In the future, whenever you encounter a problem that uses a new definition, you should first try to fully internalize the definition before applying it to the problem. Write out what it means in both words and symbols, play with some basic examples, understand how it works in R or R^k , and draw pictures.

Real analysis is hard. This topic is probably your introduction to proof-based mathmatics, which makes it even harder. But I very much believe that anyone can learn anything, as long as it is expained clearly enough.

Real analysis is typically the first course in a pure math curriculum, because it introduces you to the important ideas and methodologies of pure math in the context of material you are already familiar with.

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