com·pac·tion /kəmˈpækʃən, kɑm-/
緊湊
compaction
簡縮
compaction
緊密 壓緊
Com·pac·tion n. The act of making compact, or the state of being compact. [Obs.]
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compaction
n 1: an increase in the density of something [syn: compression,
concretion, densification]
2: the act of crushing [syn: crush, crunch]