不能删除或剪切带有筛选行的区域。复制或清除该区域将只影响未筛选的行。
You cannot delete or cut a range that has filtered rows. Copying or Clearing the range will act on only the unfiltered rows.
举例来说，如果未选中任何内容，菜单上就不应包含“复制”或“剪切”，因为它们是针对选区执行的命令。
For example, if nothing is selected, the menu does not contain Copy or Cut because these commands act on a selection.
经典的梁板弯曲理论由于未考虑横向剪切变形的影响而只能适用于细长梁和薄板。
Classical bending theory of beam and plate can only be fit for thin and long beam and thin due to without considering deformed influence of cross shearing.
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