Based on 3 models of catastrophe theory, the paper sets up a seriesindex system of economic benefit of the state-designated regional book printing enterprises.
依据突变理论，设计了我国地区图书印刷企业经济效益评价指标体系。
2
Since the consumer-price indexseries began in 1997, it has only been this high on one previous occasion (last September).
自从1997年开始核算消费者价格系列指数起，该指数只是在去年9月份达到过如此高度。
3
But Jeremy Siegel, a respected professor from the University of Pennsylvania, has launched a rival indexseries under the WisdomTree brand that weights stocks solely on their dividends.