I-beamsCOCA⁹⁷⁶⁸⁷ 基本例句 na.工字铁条；🌏工字钢原型i-beam的复数 Nowadays, the research on the overall stability of steel I-beams under combined bending and torsion is steel rare. 对于工字型钢梁在弯扭联合作用下的整体稳定承载力计算，目前的研究还很少。 fabiao Welded I-beams are widely used in the industrial and civil construction. 焊接工字梁是工业与民用建筑中常用的梁截面形式。 dictall