[建] 固定横梁 fixed beam: 固定梁; 固定射束; 固端梁cross beam: 端梁; 横梁; 交叉波束; 井字梁transverse beam, cross beam: 横梁beam fixed at both ends: 两端固定梁beam fixed at one end: 一端固定梁下载手机词典可随时随地查词查翻译