从理论上分析了原算法产生虚假投票原因，提出了一种改进算法，以几何特征角作为新的索引。
A theory dealing with the reasons of spurious votes in the prior algorithm is presented, and a modified algorithm is presented, and the geometrical characteristic Angle is the new index.
勘测人员利用几何，代数，三角学，以及各种技术，对土地及其特征进行精确的测量。
Surveyors use geometry, algebra, and trigonometry, as well as a variety of technologies, to take exact measurements of the land and its features.
研究表明，流体剧烈变化的热物性、浮升力以及三角管的几何特征对管内流动换热的影响非常明显。
The results suggest that the effects of buoyancy force, variable physical properties of the fluid, and duct geometric characteristic on flow and heat transfer can be very significant.
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