vitality index

To meet the demand of risk management in the spot market, stock index futures appeared in 1982.Although only a short period of 20 years, the stock index futures showed strong vitality and pushed the development of financial futures markets to new heights.

自1982年首个股指期货合约在美国诞生以来，尽管只有短短的二十多年发展历史，但它一出现就显示出强大的生命力，并把金融期货市场的发展推向了新的高峰。

peroxidase activity, soluble protein content and vitality index were negatively correlated, but that were not significant.

过氧化物酶活性、可溶性蛋白含量与活力指数呈负相关，但均未达到显著水平；

Set pair analysis for urban ecosystem health assessment based on emergy-vitality index

基于能值-生命力指数的城市生态系统健康集对分析

study on vitality index of soybean seed in aging process

大豆种子老化过程中活力指标的研究