The system shown in Figure 3 is that of a closed loop, with sensors feeding the control system that drive changes in the environment.

图3所示的系统是一个封闭循环，传感器负责为控制系统提供数据，而控制系统则驱动着环境中因素的变化。

youdao

The classes in a package [or subsystem] should be closed together against the same kind of changes.

包（或子系统）中的类应当按照同类的变更封闭在一起。

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To use graphics instead of text to express the open and closed states, alter the code that changes the innerHTML value of the spinner object to specify an image tag instead of text.

为使用图形取代文本来表示展开和关闭状态，更改代码，改变微调控制项对象的innerhtml值，使其指定一个图像标记而非文本。

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The lowest performing schools would face changes such as replacing teachers and the principal or being closed.

VOA: special.2010.03.18

He said the trust had been unable to find suitable alternative premises, so had closed the unit while changes are made.

BBC: Blackberry Hill Hospital 'must improve'

Three village schools have closed in the last batch of changes during a shake-up of Norfolk's education system.

BBC: Norfolk schools close in education shake-up

Some domain administrators are known to have given Icann access to their customer databases until the changes were made and then closed them down again afterwards.

BBC: Net body accused of bullying tactics