structural shapesstructuralshapes结构: structure; composition; cons ...用: 40分钟跑完全程 run the course in 4 ...型材: section bar; proximate matte ...建筑结构用合金钢结构型材规范: standard specification for alloy steel structural shapes for use in building framing镶边用型材: edging profile下载手机词典可随时随地查词查翻译
