| 摘要 |
<p>A particle dispenser (100) and method of regulating the rate of dispensing of particles (10) is disclosed in which particles (10) are dispensed through a plurality of apertures (120) having a variable effective area defined as the total area of apertures through which particles can be dispensed at any given time. The effective area is varied (121) so as to provide a high dispense rate initially and a lower dispense rate later on in the dispense cycle. In this way, relatively larger quantities of particles can be dispensed accurately and in a reasonable amount of time.</p> |
