包壳管横截面积
cladding tube cross-sectional area
水平横截面积
horizontal cross-sectional area
实测或计算截面积
measured or calcu lated cross sectional area
曲细精管横截面积
cross section area of seminiferous tubule
喷嘴截面积
area of cross-section of nozzle
cross-section area of nozzle
目标散射截面积
Target scatter section area
流通截面积
flow section areas
Flow Area of the Catalyst
actual internal area
流动截面积
flow cross-sectional area
cross-sectional flow area