Ⅱ型截面主梁  cross-section main girder

变截面轴  Variable Cross-section Shaft; non-uniform shaft

超平面截面  hyperplane section

垂直截面面积  Perpendicular cross section area

二次曲面的主截面  principal section of a quadric

钢筋截面面积  steel area; reinforcing steel area; area of steel

果穗轴截面  ear axis section

横截面面积  Cross-sectional area; cross sectional area

计算截面面积  calculated cross-sectional area

剪力墙截面面积  shear-wall cross-sectional area

桨叶截面面积  area of blade section

截面面积  Cross-sectional area; Sectional area; Cross section area; cross sectional area

截面面积测微仪  Micrometer of cross-sectional area of soft tissue

进口截面面积  intake area

进气截面面积  intake area

晶体主截面  principal section of crystal

开口截面主梁  open cross section

螺栓有效截面面积  ettectlve cross―section area of bolt

起始横截面面积  original cross sectional area

切屑横截面面积  chip cross-sectional area