空表示 meaning in Chinese

null representation

Before looking into the null representations , first decide why you might want to use an element versus an attribute for an object field
在研究空表示之前，首先确定可能需要在对象字段中使用元素与属性的原因。
If application b is a highly sensitive application , it might require that the list be empty - implying that it is being used directly by the user
如果应用程序b是高度敏感的应用程序，它可能要求该列表为空表示该应用程序由用户直接使用。