When the text field changes, the Ajax get method is called to the server.

在文本字段变更时，将对服务器调用 Ajax get 方法。

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The controller handles all UI events, such as button clicks, menu selection, and text-field changes.

控制器处理所有UI事件，例如单击按钮、选择菜单以及更改文本字段。

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We would describe this by saying 'as the Universe evolves over time and gets bigger, so this field changes in value'.

我们可以这样描述‘随着宇宙的膨胀，这个场的数量改变了’。

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The magnet creates a field which changes the polarity of a tiny, tiny portion of the metal particles which coat each platter's surface.

这个磁体创建一个,能改变覆盖在,磁盘表面小金属粒子的磁极。

哈佛公开课 - 计算机科学课程节选

The technology allows researchers to measure magnetic-field changes around the brain while a baby sits under what looks like a beauty-salon hair dryer.

WSJ: Wise Beyond Their Years: What Babies Really Know

She said it had been a challenging year as checks had discovered large numbers of field boundary changes.

BBC: Question Time

With each changing minute, an electrical pulse generates an electromagnetic field that changes the position of the crystals on the face of the watch, to elegantly display the passing time, while producing a distinctive sound unique to the Phosphor Reveal digital watch line.

ENGADGET: Phosphor's Reveal wristwatch uses Swarovski crystals to tell time, bedazzle you