At present, new energy vehicles are mainly divided into two major blocks, one is pure electric and the other is hybrid. Pure electric is relatively easy to understand, is to rely solely on the motor to drive the vehicle. However, it is not so simple to mix. I believe that when old cars look at som
Read TutorialYesterday, Jufei Optoelectronics, Weiwei, Ruifeng Optoelectronics, Hongli Zhihui, Guanghao, Sanxiong Aurora, Lianjian Optoelectronics, Zhouming Technology, Lehman Technology, Infineon and other 10 LED listed companies disclosed 2018 The first quarter results forecast, in which the four companies suc
Read TutorialThe principle of maintenance during valve operation is as follows: 1 Keep the outside of the valve and the active part clean and protect the integrity of the valve paint. The surface of the valve, the trapezoidal thread on the stem and stem nut, the sliding portion of the stem nut and the bracket,
Read TutorialWith the rapid development of the economy, cities are gradually growing. While these high-rise buildings have risen, the issue of high-level fire safety has also attracted everyone's attention. What are the points of attention for the acceptance of high-rise fire smoke extraction systems? What
Read TutorialAfter long-term development, the mineral processing equipment has become an efficient and energy-saving mineral processing equipment, greatly improving the mining rate of mineral resources and avoiding waste of resources. However, in the process of using the mineral processing equipment, some faults
Read Tutorial“To me, this is the right choice.†In September 2017, we selected the liberation tractor vehicle of FAW Qingdao and the Weichai WP10H series engine. Zhang Lei, a user of Shandong Weifang, again proved his enthusiasm for the Weichai brand. Zhang Lei, a native of Weifang, was the c
Read TutorialJaw crusher The jaw crusher is mainly used for medium-sized crushing of various ores and bulk materials, and can crush materials with compressive strength of not more than 320Mpa, which are divided into coarse and fine broken. Jaw crusher (broken jaw) is widely used in a variety of mining, metallur
Read Tutorial1 Composition of mine reserves 1.1 Mineral reserves (geological reserves) The mineral reserves held by the production mines consist of mineral reserves and production of ore. Mineral reserves (commonly referred to as geological reserves) are geological exploration, infrastructure exploration and
Read TutorialBeijing will welcome the cold of winter and cool down to -15°C today Diesel Generator | Diesel Generator Price / 2012-12-22 Today, Beijing will usher in this winter cooling process. During the day, the high temperature will drop to -3°C, the north wind will be 5-6, and the temperature
Read TutorialIn general, power quality problems in the power grid are mainly caused by various disturbances in the power grid. It covers a wide range of things, both short-term and short-term, as well as long-term or long-term: both amplitude and frequency issues. However, on the whole, the power quality probl
Read TutorialThe large amount of sand and gravel aggregates causes the grain size of the sand produced on the sand production line to be uneven, and the impurities are mixed in the sandstone. In order to produce qualified sand aggregate, we must properly solve the above problems. The strong professional technici
Read TutorialAutomatic pressure control liquid-controlled slow-closing butterfly valve is currently used for turbine inlet of the key control equipment, has a good seal, adjust the performance and create a unique three-eccentric structure of the basic structure of the hydraulic butterfly valve, auto insurance
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