◎ 沖壓 chòngyā
(1) [impact extrusion]∶用快速?zèng)_擊使金屬在沖床上變形的工藝
(2) [ram pressure]∶對(duì)航空發(fā)動(dòng)機(jī)進(jìn)氣系統(tǒng)所觀測(cè)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