element variation中文什么意思

元素演变

• element:    n. 1.要素；成分；(构成)部分； ...
• variation:    n. 1.变化，变动。 2.变量，变 ...
• variation of surface element:    曲面元素的变化

例句与用法

1. Study on laws of ground layer meteorological elements variation and fungal concentration distribution in air in beijing
   北京市近地层气象要素与大气真菌浓度分布规律的调查研究
2. Based on the field - measured data and physical model test data , hydraulic elements of the shiwutan beach in hongshui river is analyzed , and factors of hydraulic elements variation and obstacles to navigation are discussed
   摘要根据实测及物理模型试验资料，分析了红水河十五滩滩段的水力要素变化，探讨了滩段水力要素变化及产生碍航的原因。