产前筛查是指通过经济、便捷、无创伤的方法，查找出某些严重病症的高危个体，从而提高出生人口素质。
Prenatal screen means find out high-risk individuals of certain serious diseases through economical, convenient and noninvasive methods, thereby improving the quality of new-born population.
在我国经济转型阶段，通过预测人口规模来确定用地规模的方法存在着较大的不确定性，不能完全适应现在的城市管理需要。
In the economic transitional period, there is a big uncertainty to predict the urban land scale by predicting the population scale, which now can not meet the requirements of the urban administration.
目的：寻找危重症病人口腔感染霉菌最简单、经济、有效的治疗方法。
Objective: To search a simple, economical and effective way for curing fungi infection of oral cavity in critical patients.
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