The ? character means to match zero or one instance of the previous pattern element; the * character means to match zero or more of the previous element.
字符表示匹配前面模式元素的零个或一个实例，* 字符表示匹配前面元素的零个或多个实例。
An XML "value," computed by a query expression, may consist of zero, one, or many items, each of which may be an element, an attribute, or a primitive value.
由查询表达式计算出来的XML“值”，可为零项、一项或者多项，而其中每一项可以是一个元素、一个属性或一个原始值。
Values for array type components can contain zero or one element, and values for set and tree type components can have zero or more elements.
用于数组类型的组件的值可以包含0个或1个元素，用于集合和树类型的组件的值可以包含0到多个元素。
Listing 6 (eg3.xml) is an Examplotron schema that specifies zero, one, or more label elements, and allows a single, optional quote element.
清单6 (eg3 . xml)是一个Examplotron模式，它指定了有0个、1个或更多个label元素，并允许有单一可选的quote元素。
Well, an optional element is simply one that can occur zero or more times in the associated XML document.
可选元素是指可以在相关XML文档中出现0 次或出现多次的元素。
The Hammerstein model, which consists of a zero-memory non-linear element followed by a linear time-delayed plant, is one of the basic models that describe a non-linear characteristic.
该模型由一个无记忆非线性元件后接一个线性时滞环节组成，是描述非线性系统的一种基本模型形式。
The Hammerstein model, which consists of a zero-memory non-linear element followed by a linear time-delayed plant, is one of the basic models that describe a non-linear characteristic.
该模型由一个无记忆非线性元件后接一个线性时滞环节组成，是描述非线性系统的一种基本模型形式。
应用推荐