通过简单实例简绍了井字梁的特点，适用范围和一般设计要点。
Introduction to tic-tac-toe beam design
through simple examples JianShao tic-tac-toe beam characteristics , applicable scope and the general design points.
tic-tac-toe beamThe characteristicsScope of applicationDesign points
NETL
NSTL
万方数据
