N an element that is naturally radioactive 放射性元素
The value of a check box or radio button is encoded only if the form element is checked.
只有当对应的表单元素被选中时,复选框和单选按钮的值才会被编码。
If the element's type is checkbox or radio, the value is added only if the HTML element is checked.
如果元素的类型为复选框或单选框,只有选中HTML元素时,才会添加值。
An XForms implementation has to respond to user-directed events relating to an XML document (for example, the element that might be selected when a user chooses from radio buttons).
X Forms实现需要响应与XML文档有关的用户指定的事件(例如,用户通过选择单选按钮时选择的事件)。
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