In this paper, the selection of optical scheme, the choose of zoom mode and the mechanical design of the zoom cone have been deeply expounded and studied.

本文从其光学方案的选择、变倍方式的选用，变焦镜筒的结构设计多方面进行了深入阐述和研究。

youdao

I can zoom in to get more detail or switch to satellite mode if my trek takes me off-road.

我可以放大地图获得更详细的内容或者切换到卫星模式(如果路线超过了视图)。

youdao

Use Ctrl with the + key to zoom in, Ctrl with the – key to zoom out (this is especially helpful when using full-screen mode)

使用 Ctrl 与 + 键来放大，Ctrl 与 – 键来缩小（全屏幕模式下这将十分有用）

youdao

The camera tilts and zooms, and has a zoom mode high resolution enough for reading text.

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Taking HD video to the next level, the COOLPIX P7700 is capable of intelligent autofocus while recording in any mode as well as optical zoom when shooting in Auto mode.

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Its Wi-Fi functionality also lets shooters use their connected phone to control basic camera functions including shutter release, zoom, flash mode and more.

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