Many people got their first look at the telephone, typewriter, X-ray and even the ice cream cone at an expo or fair.
很多人都是在博览会或交易会上第一次见到电话、打字机、X光，甚至冰激淋蛋卷。
However, this algorithm does not apply for circular orbit cone-beam scan with line-focus X-ray source.
但是，这种算法不能满足线X射线源圆轨道锥束扫描的情况。
The direct volume imaging (DVI) means the reconstruction of volume data from a series of cone beam X ray 2d projections.
对由锥形束x线投影重建体积数据的直接体积成像方法进行了理论研究。
Many people got their first look at the telephone, typewriter, X-ray and even the ice cream cone at an expo or fair.
很多人都是在博览会或交易会上第一次见到电话、打字机、X光，甚至冰激淋卷筒。
Many people got their first look at the telephone, typewriter, X-ray and even the ice cream cone at an expo or fair.
很多人都是在博览会或交易会上第一次见到电话、打字机、X光，甚至冰激淋卷筒。
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