目的确定在医用诊断X射线剂量学中常用模体的反散射特性与人体反散射特性的近似程度。
Objective to determine the approximation of backscatter property of human body by stimulation phantoms commonly used in medical diagnostic X-ray dosimetry.
目的：探讨两组诊断名称近似（黑棘皮病与角化棘皮瘤等）疾病的医学编码。
Objective To discuss the medical coding of two diseases with approximative diagnosis name.
文中还研究了通过信息损失来计算故障诊断解空间的概率分布方法，并针对大规模系统给出了近似解空间概率分布的求解方法。
The probability models for all types of possible faults can be built up and calculated to get an index of information loss and finally a fast algorithm is developed to calculate the index.
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