That said, Iâve spent many a weekend 'Visiting Ann Arbor,â and a whole year learning about all the things I wish I would've known before I lived here. Hereâs my âTop 9' list of fun things to do in Ann Arbor.
Definition of tray for English Language Learners. : 1  a thin, flat, and often rectangular piece of plastic, metal, wood, etc., that has a low rim and that is used for carrying things. : 2  a container that has low sides and usually no top and that is used to hold something.
The plate, or tray column is the most widely used type of distillation column. The number of trays, or stages in the column is dependent on the desired purity and difficulty of separation. The number of stages also determines the height of the column.