拖拽并选择你想要裁剪的区域，它就会自动告诉你选择的像素维数。
Drag and select the area you want to crop, and it'll automatically tell you the pixel dimensions of the selection.
这可极大改善从一个或多个集群维数限定并选择数据的那些查询的性能。
This can greatly improve the performance of queries that constrain and select data along one or multiple clustering dimensions.
在索引显示的弹出菜单中选择移除维可以移除不需要的维数。
Remove unwanted dimensions by selecting Remove dimension from the index display's pop-up menu.
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