Scroll compressor was created at 1905, by a French engineering Leon Creux. But as the technology of the period was not advanced to construct a working product, first practical scroll compressors did not appear on the market until 1980s. Since 1970s, the energy crisis and the appear of high precision CNC milling machine brings the development opportunity for scroll compressor. » Read more
Scroll compressor was created at the beginning of 1900s. Due to the limitation of processing technology, there are no product before the 1970s. Now the scroll compressor is the major compressor used by air conditioning. However, there are still many technology shortages of oil-free scroll compressor. I find it hard to get the right equations for calculation of oil free scroll compressor during me trial on designing a oil-free scroll compressor as my graduation thesis. Here, zhangpeng want to share my experiences on oil-free scroll compressor. This result is a combination of books and research papers. I reconfigured each step in order to get a right result in shorter time. » Read more
I bought a Blackberry 8830, which one I dreamed for a long time, few days ago. But I got some problems in using this new cell phone. The most serious problem is that the 8830 was contract with Verizon, a US mobile communication network provider and I can’t access in China. After many hard trials, finally, I get a perfect solution to unlock my blackberry with MML for free. » Read more
Some people find it hard to make a good blog theme. But there are some common points a good theme have. Follow these 5 tips and you will make a perfect blog theme. » Read more
My blog is proudly powered by Wordpress, a most popular blog system in the world. I often make some changes in my blog. I like to change my theme most. And, surely, I know how to develop a wordpress theme. You can see some of my free wordpress theme at themes page. But for many people who don’t know how to create a blog template, you just need to know some of solutions.
It’s easy to apply for a Russian visa especially a visa for study abroad. You just need to submit some basic files and you may get a reply whether you get a visa quickly. Here are things you should put in when apply for a visa for study Russia. » Read more
In electrical circuits, we use many resistances. You will see four or five ring printed on them. Despite of using multimeter, you have another choice to judge it. You can read the color of each ring and get the exact resistance.
I’m a student from China major at thermal energy and power engineering. After a hard time of looking for job, I finally get a ideal job. Here, I want to share my resume template to help students who are wonder how to create a great resume. You should always remember that a good resume do nothing if you hadn’t improved yourself for working.
I had never used any tools to boost my blog traffic. Certainly, I got small traffic per day. The exact reason why I didn’t use any tools to expand my traffic is that I think I do not need waste time to promote my personal blog. I do know many methods of how to gain big traffic and surely I know SEO a lot.
The idea of Euler method is to use an approximation yn stands for the real y(xn) and then use the inverse multiply a step to calculate the yn+1. When we use a small step ‘h’, we will gain a curve similar to the real line. For more accurate, we improve the Euler method and it let us calculate with less works. » Read more
