| 摘要 |
The present invention relates to microchannels ( 1 ) in a substrate ( 5 ) wherein said microchannels has an internal surface ( 7, 9, 11 ) that in a region ( 15 ), adapted for distributing fluid, has one or more grooves ( 17, 27,37, 47, 57, 77 ) and/or one or more abutting projections ( 59, 69, 79 ) which extend at least partly from the bottom of the microchannel to the top of the microchannel.
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