The first generation of e-commerce sites, which hit the web in the late 1990s, were essentially digitised mail-order catalogues.

在上个世纪90年代末出现的第一代电子商务网站，仅仅是电子化的邮购目录。

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Arrange the rows in the decreasing order of importance of the causes, i. e. the most important cause first.

用横坐标表示重要性渐减的事情，也就是，最重要的事情排第一。

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This paper puts forward a new MRACS method using low order model, i. e. the fourth order hydraulic servo system following the first order reference model.

本文把液压伺服系统作四阶系统，跟随一阶参考模型，提出了一种新的高阶对象和低阶模型的MRACS 的方法。

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Three temporal logics i. e. first-order predicate calculus, modal logic and reified logic are discussed.

讨论了三种时间逻辑方法：一阶谓词演算，模态逻辑及具体化逻辑。

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First, set-valued order submartingale (supermartingale), i. e. set-valued version of real valued submartingale (supermartingale), is defined.

首先给出了实值下(上)鞅的集值版本集值序下(上)鞅的定义。

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In the probabilistic aspect, the second order moment, i. e. covariance was used, which took the first order correlation between nodal powers into account.

概率方面，考虑到二阶协方差阵，计及了各节点注入功率的一阶相关性。

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In the probabilistic aspect, the second order moment, i. e. covariance was used, which took the first order correlation between nodal powers into account.

概率方面，考虑到二阶协方差阵，计及了各节点注入功率的一阶相关性。

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