The last xs:alternative child of the element declaration is allowed to omit the test attribute.
元素声明中的最后一个xs:alternative子元素可以忽略test 属性。
The value of the test attribute of the xs:assert element information item is an XPath expression that evaluates to either true or false.
assert元素信息项的test属性的值是一个XPath表达式，其值等于true或 false。
If the XPath expression on the test attribute has evaluated to true, then the specified type is selected as a substitution for the one declared on the element.
如果test属性上的XPath表达式最终值为true，那么将选择指定的type替换元素中声明的类型。
The value of the test attribute of the xs: assertion element facet is an XPath 2.0 expression or XPath 2.0 subset as defined by the XML Schema 1.1 specification that evaluates to either true or false.
如xmlSchema 1.1规范定义的那样，xs：assertion元素facet的test属性的值是一个XPath 2.0表达式或XPath 2.0子集，其值为true或false。
The problem of constructing optimal test sequences to diagnose permanent faults in process industrial systems whose test attribute may have multi-values is considered.
针对过程工业系统故障诊断的检测次序问题，其检测属性存在多个取值。
The problem of constructing optimal test sequences to diagnose permanent faults in process industrial systems whose test attribute may have multi-values is considered.
针对过程工业系统故障诊断的检测次序问题，其检测属性存在多个取值。
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