compression
/kəmˈpreʃən/noun
mass noun
1- the action of compressing or being compressed压缩; 压紧; 压挤。
1.1
- the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal-combustion engine before ignition（点火前内燃机中混合燃料体积的）压缩。
派生词
compressional
adjective词源
late Middle English: via Old French from Latin compressio（n-）， from comprimere 'press together' （see COMPRESS）.