The second conditional element checks the id property of the Test object.

第二个条件元素检查 Test 对象的 id 属性。

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The rule shown in Listing 10 has one conditional element that references a Machine object.

清单10中显示的规则有一个引用Machine对象的条件元素。

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Therefore, this rule's conditional element checks whether the value of the type property (of the Machine object) is Type1.

因此，该规则的条件元素检查（ Machine 对象的） type 属性是否为 Type1。

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