In this paper, the area contact model of depletion layer width under avalanche breakdown in Si epitaxial wafer by a three-probe method is analysed. The theory accords with experimental results.

本文分析了三探针测试硅外延片中雪崩击穿时耗尽层宽度的面接触模型，理论和实验结果吻合。

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Three-dimensional atom probe (3dap) and thermal aged method were used to characterize precipitation of Cu-rich clusters in pressure vessel model steel.

用三维原子探针(3dap)和热时效处理方法研究压力容器模拟钢中富铜原子团簇的析出过程。

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Now a laser triangle measuring device instead of test probe is installed on the three-coordinate measuring machine, but this method is still limited by the three-coordinate measuring machine itself.

改进的方法是将激光三角测量头装在三坐标机上以代替触针，从而实现了非接触测量，但此法仍然受到三坐标机本身的限制。

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