1 Drawing machine double frequency conversion control system Drawing machine variable frequency control system is currently the most used double conversion system, one of which is used as the main pull, the other for take-up control; small (fine) pull machine currently has
Crop pests and diseases are one of the major agricultural disasters in China. They are characterized by many types, large impacts, and frequent outbreaks. The scope and severity of crop diseases and pests often cause heavy losses to China's national economy, especially agricultural p
In 2010, China's auto market sold 18.06 million vehicles throughout the year and sat firmly on the throne of the world's largest auto sales. However, for foreign companies in China's tire market and tire companies with their own brands, they all have their own tastes. In the Spr
Check whether the arm-rubbish truck oil has white turbidity or serious pollution. If the oil appears turbid and white, it is likely that the engine coolant has been contaminated to repair or replace damaged parts. If the color of the oil becomes black, it w
When used for product packaging, a material capable of producing plastic foam is injected into the space between the container and the content lined with the film and a chemical reaction is performed to form a machine for tightly packing the foam cushioning material. Foaming equipment is
A solar cell is a device that directly converts light energy into electrical energy through a photoelectric effect or a photochemical effect. The sun shines on the semiconductor pn junction, forming a new hole-electron pair. Under the action of the pn junction electric field, the hole flows from th
On April 22, the new launch conference of Liuzhou M7 tractors was held in Yulin Yuchai Machinery & Electric Liusha 4S shop, and the customer set 7 cars on site. Dong Cheng Liuzhou Automobile Co., Ltd. Assistant General Manager Cheng Yuan, Yuchai Guangxi Branch Deputy Director Liang Jiang, and
New navigation technologies are playing an increasingly important role in ensuring flight safety, improving operational efficiency, and improving flight schedules. On November 13-14, the seminar on aviation safety and operational efficiency was held in Beijing. The conference focused on th
New navigation technologies are playing an increasingly important role in ensuring flight safety, improving operational efficiency, and improving flight schedules. On November 13-14, the seminar on aviation safety and operational efficiency was held in Beijing. The conference focused on th
The pressure transmitter adopts a special integrated module, which achieves accurate measurement and transmission of pressure changes of liquids, gases, steam, etc. through fine temperature drift, zero point, and nonlinear compensation. The pressure transmitter is the best measurement effect to be o
The light box is a kind of incubator, and there are artificial climate boxes, seed germination boxes and so on. Incubators provide the most suitable environment for plant growth, unlike the natural environment. The light box is a device that is mainly used for adjusting the light intensi