这架名为“智能1号”的探测飞船的撞月速度为每秒2公里。按照此速度，这次撞击预计会在月球表面留下一个直径3米、深10米的坑，而且会在月面激起几公里高的尘埃。

Hitting at 2 kilometers per second, the impact of the SMART-1 spacecraft was expected to leave a 3-meter-by-10-meter crater and send dust kilometers above the surface.

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鉴于此，采用面阵CCD对钻杆受磨损部位的直径进行非接触式测量。

Therefore area array CCD is adopted for the non-contact measurement of the diameter of the abrading section of the drill pipe.

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在此基础上，研究了轴流压缩机叶栅内不同直径粒子在叶片压力面和吸力面的沉积规律；

Then the deposition characteristic of different particle diameters in the blade cascade of the axial compressor was obtained.

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