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1. Oxford Dictionary

   compaction

   • IPA[kəmˈpakʃ(ə)n]

   英式

   • n.
     the exertion of force on something so that it becomes more dense

   • noun: compaction, plural noun: compactions

2. • 釋義

   n.

   名詞

   • 1. the exertion of force on something so that it becomes more dense an ice core, formed by compaction of previous snowfalls, constitutes a historical record of the local climate tyres take up valuable landfill space and prevent waste compaction