Nine steel-concrete composite box girders,four under pure torsion and five under combined bending and torsion were tested to study their torsional behaviors.是什么意思_Nine steel-concrete composite box girders,four under pure torsion and five under combined bending and torsion were tested to study their torsional behaviors.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句