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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.
The filter consists of the shell, the multi-element filter element, the anti-flushing mechanism, and the differential pressure controller. Casing of diaphragm plate inside cavity can be divided into upper and lower two cavity, the cavity is equipped with multiple filter core, so that make full use of the filter space, significantly reduced the volume of the filter, are installed in the inferior vena recoil wash suction cups. At work, the turbid solution enters the filter chamber through the entrance and enters the inner cavity of the filter core through the diaphragm hole. The impurities that are larger than the gaps in the filter core are truned away, and the net fluid reaches the upper chamber through the gap and is finally sent out from the outlet.
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