緊湊
Compaction \Com*pac"tion\, n. [L. compactio.] The act of making compact, or the state of being compact. [Obs.] --Bacon.
compaction n 1: an increase in the density of something [syn: {compression}, {concretion}, {densification}] 2: the act of crushing [syn: {crush}, {crunch}]
compaction {compression}