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甘肃临夏位于海拔2000米以上,冬长夏短,冬季严寒。我们于1982年6月对1570名4~7岁的儿童进行了口腔检查,兹将结果报告如下:
Linxia in Gansu is located at an altitude of 2000 meters above sea level, the winter long summer is short, the winter cold. We conducted oral examinations of 1,570 children aged 4 to 7 in June 1982. We report the results as follows: