| http://www.w3.org/ns/prov#value | - In a modified arraangement according to the invention that may be applied particularly simply to apparatus such as that shown in FIGS. 8 and 9 or FIG. 11, in which the carrier liquid flows transversely through the standing wave, it is possible to establish two or more standing waves in different flow regions so that the liquid passes successively through each standing wave.
|
