畸变断面  Distortion of the cross section

变断面  variable cross section; variant-section

变断面管  arbitrary section tube

变断面涵道  variable section conduit

变断面梁  variable cross section beam

变断面轧机  taper rolling mill

变断面轧制  variable section rolling

断面变化  change in section

断面面积  section area

钢筋断面面积  area of steel

过水断面面积  discharge area

河床断面变化  variation of cross section of riverbed

渐变断面梁－柱  Tapered beam-column

阶段变断面型材  changing section profiles; stepped variable-cross-section profiles

净断面面积  net sectional area

均衡断面面积  equilibrium area

可变断面  variable section

廊道断面面积  area of culvert transect

连续变断面  continuous variable cross-section