◎ 冲压 chòngyā
(1) [impact extrusion]∶用快速冲击使金属在冲床上变形的工艺
(2) [ram pressure]∶对航空发动机进气系统所观测到的进气口压力与大气压之间的压差

1.{机} punching press; punching; pressing; stamping; die stamping; force through; extrude