| 摘要 |
The particles are deposited on a moving body made of a material which is capable of melting under the influence of the particles with the result that some of them melt through the body more quickly than others so that the particles can be collected at different spaced locations beneath the moving body. The moving body may be a sheet of ice (26) formed, and moved from, between a pair of cooled endless belts (10, 12) or formed on a moving stream of water. The particles may be heated (32) before deposition on the moving body. <IMAGE> |
