1.By isualization the phased array pulse with a strobed photoelastic system the real picture can be seen.

1.使相冲和光弹系统同步，而可以看到超声冲传的真实照片。

2.An application of three dimensional photoelastic stress analysis in a dam with drains for floatage at the Three Gorges Project is described.

2.叙述了三维光弹应力分析在三排漂孔坝段中的应用。