An increase in the accuracy of facial fracture diagnosis has been appreciated secondary to the advent of three-dimensional ct scans.
三维ct扫描技术的出现才使脸部骨折的精确诊断得以实现。
Objective: To assess the accuracy and reproducibility of real-time three-dimensional echocardiography (RT-3DE) for measuring the volumes of models with different shape and size ire vitro.
目的：评价实时三维超声心动图(RT - 3de)技术在不同形状体外模型容积测量中的准确性和重复性。
The mechanical structure, principles and ways of control, and the working accuracy of three dimensional WEDM machine are discussed.
探讨了斜度线切割机床的机械结构、控制原理和方式以及精度误差。
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