Gate keeps closely movement with gate when opening and closing, makes valve open and close stability and cuts off the media, and so on.

在关闭和开启过程中阀座跟闸板一直紧贴运动，使得阀门启闭力稳定，并且具有切断介质等特点。

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Mathematic analysis is a course of studying function by limit method with dialectical closing thought of movement as its basic idea and limit theory as its basic tool.

《数学分析》是用极限方法研究函数性态的一门课程，其基本思想是运动辩证的逼近思想，基本工具是极限理论。

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Opening-closing is a basic form of the Earth's movement and opening-closing tectonics is a basic tectonics in geological evolution.

开合运动是地球运动的基本形式，开合构造是地质演化的基本构造。

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The Indiana study attempted to farm 9.7 million tweets posted over ten months in 2008 by 2.7 million twitter users, measured them using the GPOMS and a few other computer science methods, and checked the closing movement of the Dow Jones industrial average for each day.

FORBES: Can Twitter Predict the Stock Market?

UNITA's external bank accounts, closing the movement's offices in Europe and America, and a worldwide refusal to give visas to its leaders.

ECONOMIST: Deadline for Angola | The

But despite the movement's passion and determination, the door to democracy in Egypt appears to be closing.

CNN: Analysis: Egypt's ailing democracy movement