With the advancement of science and technology and the development of human civilization, people have higher and higher requirements for parking lots. Intelligent parking management systems have emerged. More and more communities are now equipped with intelligent parking management systems. The de
Read moreRecently, the China Consumers Association (hereinafter referred to as "China Automobile Association") released an analysis of complaints received by the National Association of Consumers Association in 2017. According to statistics, in the whole year, the National Association for Consume
Read morePowerful and efficient Revo FR220E Shelf LinerCupboard Liners,Wire Shelf Liner,Kitchen Shelf Liner,Kitchen Cupboard LinersShenzhen Molding & Forming Industries Co.,ltd , https://www.mfi-cn.com
Read moreThe reporter learned from the China University of Science and Technology that the Key Laboratory of Quantum Information of the Chinese Academy of Sciences, led by Academician Guo Guangcan, has made progress in the development of nano-electromechanical systems (NEMS). The laboratory collaborated wi
Read more1. The floatability of copper , lead and zinc sulfide ore 1. The floatability of copper minerals (1) Chalcopyrite CuFeS2, containing Cu 34.57%. Porphyry copper deposit. Collector : low-grade xanthate, black medicine. Mechanism: chemisorption, interaction with copper ions to form copper xanthate;
Read moreEvery winter, with the sudden drop in temperature in most parts of the north, people's attention to heating is accelerating. At the same time, accompanied by heating, burning coal cause fog and haze, and "coal to electricity," "coal to gas," the high cost required, but also
Read moreAccording to data released by EV Sales, the US electric vehicle sales statistics website, global electric vehicle sales in 2017 exceeded 12.23 million units, up 58% year-on-year; global electric vehicle sales exceeded 1 million units for the first time, setting a new record. On the one hand, the nu
Read moreCore Tip: According to foreign media reports, the Toyota North American CEO at the New York Auto Show on March 29, 2018 declared that in the early stages of self-driving car R&D, there may be a traffic accident that killed hundreds of people. However, as the technology matures, it can save mor
Read moreSeparation of chemical beneficiation - flotation Segregation-flotation is a combination of pyrochemical treatment and flotation. E.g. refractory segregation of copper oxide ores - flotation ore is crushed to a particle size after mixing to a small amount of salt (0.1-1.0%) and coal dust (0.5-2.0%)
Read moreWith the development of automotive industry technology becoming more intelligent and green, automotive lighting is transforming from the traditional lighting field to the emerging LED field. LED technology continues to develop, technology shortcomings are constantly being overcome, LED lights are be
Read moreIn December, the total export value of China's LED lighting was 2.375 billion US dollars, up 15% year-on-year; the export volume was about 2.022 billion, up 24% year-on-year; the scale index increased by 3 percentage points from the previous month. I. Summary of contents China's LED lighting
Read more1. High-low temperature impact test box In high temperature test, if the temperature change does not reach the test temperature value, the electrical system can be checked and the faults can be eliminated one by one. If the temperature rises very slowly, it is necessary to look at the air circulati
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