?纵梁
... 梁 beam 纵梁 carline =carling; fore and aft beam; fore-and-aft beam; girder longitudinal; longerons; longitudinal beam; longitudinal girder; longitudinally disposed beam; side rail; spar; stringer; stringpiece; tree 底纵肋 bottom longitudinal ...
主桁梁
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。