As the uninterruptible power supply in parallel in the system in all digital control mode, the modulation ratio linear changes in the output voltage is not smooth, at the same time, the voltage detection resolution, the phase synchronization control accuracy and SPWM drive pulse …
Method for treating fine mud: In the practice of flotation, in order to overcome the deterioration of the flotation process by fine mud and to eliminate the harmful effects of fine mud, the following measures are often adopted:
1. Conventional flotation treatment of fine mud
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Pesticide residue is a major factor that threatens the safety of vegetables and fruits. Therefore, the strengthening of pesticide residue testing is an important task in modernizing the safety of agricultural products. Different from laboratory testing, the application of …
First, the general provisions: 1, coal mining machine operator to be trained, familiar with the equipment's performance, those who pass the examination before the operation, must be certified.
2. It is not a…
LED Display Quality Assurance Eight Techniques and Routine Maintenance Methods
From display technology, LCD is a display screen composed of liquid crystal, and LED is a display screen composed of light-emitting diodes. Each pixel unit in the LED digital display is
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At present, there are two main processes in the world for the production of refined zinc through zinc concentrate: pyrometallurgical and wet smelting. The vertical tank distillation zinc in the pyrometallurgical zinc ha…
At present, there are many types of magnetic separators used at home and abroad, and the classification methods are different. According to different characteristics, the following classification methods are available. (1) According to the magnetic sou…
Beijing time on April 24th news, according to foreign media reports, Huawei and the French Peugeot Citroen (PSA) Group on Monday (local time April 23) jointly released the DS 7 CROSSBACK connected car, which is also the first launch of cooperation between Huawei and Peugeot Ci
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Dry powder mixing equipment is an indispensable equipment for material processing. The requirements for mixing equipment in the material processing field and other industrial fields are very strict. As an important part of the formulation process, mixing equipment should also keep pace with the
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When purchasing primary school bus and kindergarten bus, all localities must purchase from the “Vehicle Production Enterprise and Product Announcement†to avoid problems such as the inability to handle the license due to the purchase of unqu
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![Autotech 2017 3]( "Autotech 2017 3")
Framgångsrik avslutning av Autotech 2017 förstärker förnyad optimism i MENA Vast Auto Aftermarket
Den 25: e utgÃ¥van av AUTOTECH International Auto Aftermarket Trade …