利用逆散射理论，通过测量离体血管的声散射场振幅谱的大小周期，重构了猪的主动脉离体血管的内外半径，重构参数的相对误差<4%。
Inverse scattering theory was applied to reconstruct the inside and outside radii of the aortic blood vessels of a pig by scattering spectrum. The relative errors of reconstruction were less than 4%.
本文在借鉴国内外数控系统设计的基础上，对现有的两种刀具半径补偿算法进行了深入的研究。
We present two kinds of tool radius compensation algorithm in-depth study, base on the basis of the design at home and abroad CNC system.
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