Conclusion: This research defined the concept of ES, which resolved the problem of confused concept.
结论：本研究明确了流行病学监测的概念，解决了流行病学监测概念不清的问题；
The concept of the neural expert system which combines ES and ANN is put forward.
将专家系统与人工神经网络相结合提出了复合专家系统的概念。
The concept of using embryonic stem (es) as a source of multiple cell types for use in tissue repair has existed for about 20 years.
为组织修复而提供多种细胞类型资源的胚胎于细胞(es)的概念已经出现大约20年了。
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