AR Area Regulation 区域管制
Ar has been widely used in the areas of medical, military, industry, education, entertainment and engineering, and it becomes a recent hotspot in virtual reality area.
增强现实技术在医疗、军事、工业、教育、娱乐和工程等领域都将具有非常广阔的应用前景，是目前虚拟现实领域的研究热点。
The overlapping sensitivity matrix, area ratio (AR), reconstruction image, two-absorber model, and contrast-to-noise ratio (CNR) in different depths are used to evaluate the performance of PG.
论文采用重叠灵敏度矩阵、面积比、重建图像、双吸收组织模型、不同深度下的信噪比等评价参数，对提出的多边形探头分布模型的性能进行评估。
As and ar in the formula are peak area or peak height of internal standard substance and reference substance, Cs and CR are density of internal standard substance and reference substance separately.
式中as和AR分别为内标物质和对照品的峰面积或峰高，Cs和CR分别为内标物质和对照品的浓度。
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