1. By isualization the phased array pulse with a strobed photoelastic system the real picture can be seen.
   使相控阵脉冲和光弹系统同步，而可以看到超声脉冲传播的真实照片。
2. An application of three dimensional photoelastic stress analysis in a dam with drains for floatage at the Three Gorges Project is described.
   叙述了三维光弹应力分析在三峡工程排漂孔坝段中的应用。

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