Analyzing the source of spatial data and improving the quality of spatial data are the precondition of building GIS.
分析空间数据来源、提高空间数据质量是建立地理信息系统的前提。
Through analyzing the condition of students' understanding and following of etiquette this article interprets the importance of improving social etiquette teaching in quality education.
通过分析学生对礼仪的认识与遵循的状况，阐述推广、改进社交礼仪教学在素质教育中具有重要作用。
By analyzing the factors that influence on the product quality and filtration rate, the Suggestions for improving filtration performance were proposed.
通过对影响产品质量及过滤速度的因素分析，提出了改善产品过滤性能的建议，对产品过滤方法研究及生产具有参考价值。
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