A field such as ContactDatabase.N can be an aggregate composed of up to five parts, as follows, where the integer represents the index of the respective component part.
如ContactDatabase . n之类的字段可以是最多由5个部分组成的聚合，如下所示，其中整数表示各个组件部分的索引。
In particular, if the component expects a signed integer with the smallest value of 0, actually check for that.
具体来说，如果组件期望一个最小值为0的整数，就请实际检查这一要求是否能够满足。
Set the Component transaction timeout integer to 30.
将组件事务超时时间设置为30。
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