由于Calendar组件禁止手动输入，所以不可能输入无效的日期。
Because manual input is disabled for the Calendar component, you can't even enter an invalid date.
打开机箱门或面板前把手动/禁止开关打到禁止。
Rotate AUTO/INHIBIT switch to INHIBIT before opening enclosure doors or panels.
打开机箱门或面板前把手动/禁止开关打到禁止。
Rotate AUTO/INHIBIT switch to INHIBIT before opening enclosure doors or panels.
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