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However, science and technology are two different social cultures, and the differences between them are obvious. The basic task of science is to know the world and find it, thus increasing the intellectual wealth of mankind. The basic task of technology is to discover the world and invent it to create the material wealth of mankind and enrich the spiritual and cultural life of human society. Science answers questions about "what" and "why"; The technology answers the question "what to do" and "how to do". Therefore, the results of science and technology are different in form. Scientific achievements are generally expressed as concepts, laws, papers and other forms. The technical results are usually in the form of process flow, design drawing, operation method and so on. Scientific products are generally not commercial and technological achievements can be commoditized. Modern technology has a strong utilitarian and commercial color.
Symptomatic care: baby vaccinated, 24 hours may appear low-calorie, vaccination site appear red and swollen, and the following reaction, is normal phenomenon, parents as long as careful symptomatic care, baby will recover soon.
3, the vaccination site, such as redness, swelling, heat, pain, inflammatory reaction if the symptom is lighter, and the diameter of the red area is lesser, early should be within 24 hours with a clean towel cold compress, control the development of inflammation, after 24 hours to clean the hot towel hot compress promote inflammation, early one all the time, about 10 min each time, until the inflammatory reaction disappeared completely. The vaccination site appear scleroma, parents can on the partial discharge of induration clean, dry towel, and hot water bag is put on the towel, one time in the early, middle and late every day, every 10 minutes. However, it is important to remind that the BCG vaccine and other attenuated vaccine can not be applied to the heat of the towel, otherwise it will affect the effect of the inoculation.
Principle: resulting in differential pressure. By differential pressure switch monitoring in and out of the nozzle pressure difference of change, when the differential pressure to set data, control device for hydraulic control valves, motor drive signal, caused by the following action: motor driving brush rotation, the filter cleaning, emission control valve to open at the same time, the whole cleaning process for dozens of seconds, at the end of the automatic brush filter when cleaning, close the valve, the motor stop running, system back to its initial state, began to filter into the next process
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