求翻译：如果实际服务绩效大于顾客的期望，则顾客感知服务质量良好，反之，则顾客感知服务质量较低，这个概念的建立为以后的研究打下了坚实的基础。是什么意思？

If the actual service performance is greater than the customers' expectations, the customer perceived service quality is good, hand, lower customer perception of service quality, this concept has laid a solid foundation for future research.

If the actual performance of services more than the customer, the customer perception that good quality, and vice versa, and the customer perception are of lower quality, and the concept of building for the future research has laid a solid foundation.

If actual serves the achievements to be bigger than customer's expectation, then the customer sensation grade of service is good, otherwise, then the customer sensation grade of service is low, this concept establishment has built the solid foundation for later research.

If the actual performance is greater than the customers ' expectations of service, the customer perceived service quality good, on the contrary, the customer perceived service quality will be low, establishment of the concept of research has laid a solid foundation for the future.

正在翻译，请等待...