国产成人剧情AV果冻传媒

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          The mean diameters of macrogrits shown in the table are estimated and for information only, the FEPA "P" standard defines them as a range and not a single value.

          MACROGRITS

          MICROGRITS

          Grit designation

          Mean
          Diameter
          in µ

          Grit
          Number

            Mean
          Diameter
          ds 50 µm

          P12

          1815

          P240

          58.5 ± 2

          P16

           1324

          P280

           52.2 ± 2

          P20

           1000

          P320

              46.2 ± 1.5

          P24

           764

          P360

              40.5 ± 1.5

          P30

          642

          P400

              35.0 ± 1.5

          P36

           538

          P500

              30.2 ±1.5

          P40

           425

          P600

            25.8 ± 1

          P50

           336

          P800

             21.8 ±  1

          P60

           269

          P1000

            18.3 ±  1

          P80

           201

          P1200

            15.3 ±  1

          P100

           162

           P1500

            12.6 ±  1

          P120

           125

          P2000

               10.3 ±  0.8

          P150

           100

          P2500

                 8.4 ±  0.5

          P180

          82

           

           

          P220

           68

           

           

           

          The particle size distribution of macrogrits is determined by sieving, while the microgrits have been measured by sedimentation (US-sedimentometer).

          More information can be found in the FEPA-standard 43-1984 R 1993 and in ISO 6344.

           
          国产成人剧情AV果冻传媒