| 摘要 |
An abrasive segment 1 for disc refiners is formed such that it presents a figure of rods 2,4 and depressions 3,5 and there are flow restrictions 6 situated in depressions 5. The depressions 5 are in communication with one another through openings 8 in the rods 4, so that the depressions have free connection outwards and inwards through the openings 8. <IMAGE>
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