◎ 沖壓 chòngyā
(1) [impact extrusion]∶用快速沖擊使金屬在沖床上變形的工藝
(2) [ram pressure]∶對航空發(fā)動機(jī)進(jìn)氣系統(tǒng)所觀測到的進(jìn)氣口壓力與大氣壓之間的壓差

1.{機(jī)} punching press; punching; pressing; stamping; die stamping; force through; extrude