| 摘要 |
A semipermeable membrane-containing cell, useful when connected to a pump and a pressure control to form a reverse osmosis system, has an adjustable gap through which the feed water flows over the membrane surface. The gap is formed between the membrane surface and the surface of a disk having a stem screw-thread mounted inside the cell so that rotation of the stem will move the disk surface closer to or farther from the membrane surface. An O-ring seals the disk stem to the cell interior and provides friction to maintain the gap adjustment.
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