常見例句雙語例句During pipe line laying or large beam support welding, it often meets crossover of two or multi different axis large diameter pipe piece.在管道鋪設(shè)或大型梁架焊接過程中，往往會(huì)遇到兩個(gè)或多個(gè)不同軸線的大直徑管件相交的情況。 返回 beam crossover