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What are the specifications of the intermediate filters for each filter accuracy, the air volume per unit area, or the air flow speed, and how to calculate the pressure loss? There are also some so-called national standard specifications: 484*484 *?Generally, there are some detailed requirements,The amount of ventilation is related to the flow rate,Generally, one Shanghai index is required,Loss of pressure,The initial pressure is generally 200,The end pressure is not big,There are also hundreds of Pa, which have national standards,
After 4000r centrifugal, how to filter? 1.Experiment: preparation of cell membrane.The main test points are material selection (structural features and functions of mature red blood cells in mammals) and treatment methods (water absorption and breaking,2.Composition of cell membrane.Lipid (mainly lipid) and protein (type and quantity are related to the function of cell membrane );Alpha-fetoprotein and cancer embryo antigen can be combined with the cell cancer test in chapter 6;The composition of the cell membrane is generally combined with the structure of the cell membrane.3.Cell wall.Ingredients: cellulose,Cell wall and pectin can be removed by cellulose treatment.4.Submicroscopic structure of animals and plants.Be familiar with the map.5.Organelle list review,6.Organelle learning should also be classified and summarized: two-layer and membrane-free organelle;Organelle containing pigments;Organelle distinct from animal and plant cel