对接口没有实质性影响的服务提供者实现变更。
Change to the service provider implementation which has no material impact to the interface.
证券服务营销的实质和主流是关系营销。
The essence of security service marketing is relationship marketing (RM).
服务修复管理在实质上，是服务质量管理的一个重要组成部分。
With these points, we can make a definition on total service recovery management.
服务修复管理在实质上，是服务质量管理的一个重要组成部分。
With these points, we can make a definition on total service recovery management.
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