I don’t know if the students have broken the PCB board? It’s a fabricated board. It doesn’t work. I did. Twice in my memory. Why do the same mistakes happen so many times? Here are the details. The process of PCB board doing bad These two times are roughly like this, the production documents will…
According to Japanese media reports, a national medical institution in Osaka has successfully developed a small “artificial lung” (ECMO), which has played a crucial role in saving seriously ill COVID-19 patients during the current epidemic. Compared with the traditional ordinary ECMO, the small “artificial lung” is safer and simpler to operate, which can effectively reduce…
1, the rigidity of the grinding machine Because the cbn abrasive is relatively hard, the force on the grinding wheel shaft is much larger than that of the ordinary grinding wheel, so the grinding machine is required to have greater rigidity than the ordinary grinding wheel 2, the grinding machine should have a higher linear…
At present, the commonly used polishing methods are as follows: 1 mechanical polishing Mechanical polishing is a polishing method that removes the polished convex part by cutting and plastic deformation of the material surface to obtain a smooth surface. Generally, oil stone strips, wool wheels, sandpaper, etc. are used, and manual operations are mainly used….
Liquid crystal screen Liquid crystal screen is based on liquid crystal material as the basic component, filling liquid crystal material between two parallel plates, through the voltage to change the liquid crystal material internal molecules in the column condition, in order to achieve the purpose of shading and light transmission to display different shades, scattered…
Beauty apparatus is an important tool indispensable in daily beauty care, and with the increasing demand of consumers for beauty, there are more and more beauty apparatus on the market. But as a new product, how to make a breakthrough, become the focus of market attention and achieve long-term development? 01 Design concept of beauty…
In the MapReduce framework, the Shuffle stage is a bridge between Map and Reduce, and the Map stage outputs data to the Reduce stage through the Shuffle process. Since Shuffle involves disk reading and writing and network I/O, the performance of Shuffle directly affects the performance of the entire program. Spark also has a Map…
Analysys Digitalization: Manufacturers in the field of “digital twins” are deploying low-code platforms for 3D visualization to help customers quickly develop digital twin visualization applications. API openness and extensibility are the key capabilities and selection keys for digital twin low-code platform application value amplification. event background Manufacturers in the “digital twin” field are laying out…
The invention of the computer with semiconductor chips as the core has achieved the rapid development of the modern information technology industry (hardware, software, network, communication, etc.), and profoundly changed the form of human social activities. As Moore’s Law slows, chips are moving toward complex system-level innovations to meet power and performance requirements. One direction…
01 surprising new product In order to let the algorithm land, artificial intelligence companies are also racking their brains. In August, SenseTime, the leading AI company in China, released a surprising new hardware product——Yuanluobot Robot. This is an AI chess-playing robot with a price of 1999 yuan. Just like its name, it can only be…