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Scale template used for pyramidal tract X-rays CT system is prepared through inlaying 4 point-shaped metallic balls in the 4 apex points of a quadrate on an organic glass or drilling 4 orifices at said 4 apex points on a metallic plate. 专利
申请日期: 2005-01-01, 公开日期: 2005-11-09
作者:  SUN Y HOU Y ZHAO F
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