如果相机支持缩放功能，你可以按方向键向上或而病倒调整焦距。
If the camera supports zoom function , you can press up or dowm arrow key to adjust the focal length .
NET是一个完整的图表框架，可允许您立即执行先进的数据情报功能，如滚动轴、缩放、钻取，以及轻松实现对AJAX的全面支持。
NET is a complete charting framework that will instantly enable you to perform advanced data intelligence features like scrollable axes, zooming, drill down and full AJAX support with ease.
NET是一个完整的图表框架，可允许您立即执行先进的数据情报功能，如滚动轴、缩放、钻取，以及轻松实现对AJAX的全面支持。
NET is a complete charting framework that will instantly enable you to perform advanced data intelligence features like scrollable axes, zooming, drill down and full AJAX support with ease.
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