文摘：以土壤颗粒组成数据为基础，分析了我国土壤颗粒组成的分形维数。
Abstract: This paper analyzed the fractal features of particle size distribution (PSD) of soils in China.
中文摘要目的：分析和探讨骨巨细胞瘤术后复发的相关因素。
ABSTRACT Objective: to study the factor affecting the recurrence of giant cell tumor of bone.
文摘：分析和探讨了城市环境噪声的特征、影响及控制和管理措施。
Abstract: in the paper, it is analysed and inquired into the characteristic and the influence and the control and the management of urban environment noise.
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