| 摘要 |
This pot comprises a block of hydrophilic foam (1) made from plastic material and of a density between 0.15 and 0.35 which has been covered over a fraction of its outer surface of between 15% and 95% of the latter with a continuous layer of impermeable material (2), preferably of plastic material of a thickness of approximately 0.5 to 3 mm. <IMAGE> |
