Summer pigs eat some bitter nutrition and relieve heat

Bitter and melon fruits and vegetables contain amino acids, vitamins, alkaloids, trace elements, etc., can promote the secretion of gastric acid, increase the concentration of gastric acid, thereby increasing appetite. Traditional Chinese medicine believes that the summer heat is heavy and .......

Four common classifications of fire pumps

Nowadays, there are more and more opportunities for the use of fire pumps. Therefore, people are paying more and more attention to the fire pumps. Now, there are more and more fire pumps. People can choose these fire pumps according to their actual needs. So when these fire pumps are used, we .......

On the Principle of Transformer

Transformer is an important instrument for current, voltage, power, energy testing and metering. Its accuracy directly affects the reliability of the measured data. In order to ensure accurate and reliable testing and measurement, it must be verified before it is put into use. The special inst.......