As a "Product" of travel developing, theme park has periodicity of "Product", so not only will we considerate the present demand, but also the long-term demand.

主题公园作为一项旅游开发“产品”，具有产品的周期性，不仅要考虑当前的需要，还要考虑长期的社会需要。

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First we employ EMD method to decompose the crude oil prices in NYMEX, and obtain a series of intrinsic mode function (IMF), which are stationary and of strong periodicity, and a trend term.

首先利用EMD方法对NYMEX市场的原油期货价格进行分解，得到一系列平稳且具有较强周期性的本征模函数(IMF)和一个趋势项。

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The difference between capital turnover and capital cycle lies in studying the cycle of capital in term of periodicity rather than The Times of capital cycle.

资本周转与资本循环的区别在于是否从周期性上去考察资本的循环，而不在于资本循环次数的多少。

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