Because the number of complex buildings 'point cloud data is very huge, this paper has determined the suitable criterion of model simplifying through experiments using different accuracy.
针对复杂建筑物的点云数据量庞大，通过不同精度的实验确定了模型简化的适宜尺度。
In this paper, the chloroallyl group content of PVC have been determined by potentiometric titration and the correlation between chloroallyl group content and molecular weight has been studied.
用电位滴定法测定了聚氯乙烯（PVC）中的烯丙基氯含量，研究了烯丙基氯含量与PVC相对分子质量的关系；
By analyzing the localization of cut in processing poston ring, this paper determined a new processing method for poston ring, which has high positioning accuracy and high production efficiency.
通过对活塞环加工过程中开口准确定位问题的分析，确定了一种定位精度高、生产效率高的加工工艺。
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