瓣口面积  mitral valve area

瓣膜有效开口面积  Effective orifice area

泵出口面积  pump discharge area

舱口面积系数  hatch area coefficient

出风口面积  exit area

出口面积  area of outlet; vent size; exit area; outlet area; output area

窗口面积  Window area

等效阀口面积  Equivalent orifice area

断口面积  area of fracture

二尖瓣瓣口面积  Mitral valve orifice area

阀口面积  Orifice area

阀芯开口面积比  Valve opening area ratio

进口截面面积  intake area

进口面积  area of inlet; intake area

开口面积  port-area

开口面积比  open area ratio

孔口面积  orifice size

排烟口面积  area of the smoke vent; smoke vent area

喷口面积  exhaust nozzle area