Zoom Center 缩放中心 ; 中心缩放 ; 光标点为下个屏幕中心
The computed movement is then restricted to the maximum distance from the center of the zoom slider.
计算得到的移动将被限制在从zoom滑块的中心位置移动的最大距离。
Listing 13 adjusts the center point and the zoom level so that you can see the full map.
清单13调整了中心点和缩放级别，使您能够看到完整的地图。
When zoom lens are used for military sighting, the drift of optical center caused by the change of focus length will reduce the sighting accuracy severely.
长焦变焦镜头用于军事瞄准时，变焦过程中较大的光中心漂移，降低瞄准精度。
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