field validation短语⁵⁰⁸⁷⁷ 基本例句 外场验证 Conclusion The study covers all major aspects and their significance in social burden of advanced schistosomiasis, and an evaluation index system has been established for field validation. 结论本研究对晚期血吸虫病社会负担的各层面及其重要性进行了研究，确立了晚期血吸虫病社会负担评价指标体系。 jsczz