化工名词解释(Explanation of chemical terms) The viscosity is generally referred to as dynamic viscosity, the unit is pa - secative numbers can leaking through the mesh mesh, i. e. the particle size is smaller than the mesh size: while positive numbers can not pass the mesh mesh, i. e. particle size greater than the mesh size. For example, TOO particles of ~+200 mesh, which indicates that these particles can be from 100 to 200 and not from the leakage mesh to mesh leakage, in this screen mesh particles, should be large number (200) on the number of small (100) of the screen below, in large number (200) left the screen is -100^200 to particle. yield The yield (yield or percent yield) or the reaction yield, generally used for chemical and industrial production, refers to the chemical reaction or related chemical industrial production, product yield and theoretical calculation of the ratio of the actual number of units produced from raw materials into products yield. A chemical reaction also have different yield at different pressure and temperature. In general, the yield is very high yield above 90%, 75% above is a good yield of about 60% is generally yield below 30% is very low yield. According to the chemical equilibrium in the direction of movement, judging the reactant conversion rate. Because the external conditions change, caused by the movement of chemical equilibrium, accor
