Methods According to the standard of the second national oral health epidemiological investigation, the incidence of caries in 3 ~ 74-year-old residents of the two town were examined.
方法按照第二次全国口腔健康流行病学调查标准，对两镇3 ~ 74岁人群进行龋病流行病学抽样调查。
Methods Under stratified sampling, the investigation of the oral health concept and behavior were carried out using closed type questionnaire method.
方法采取分层抽样方法，分别对口腔健康观念与行为情况进行问卷调查、填写记录。
Through using the method of previous literature investigation, this paper discussed the effects of oral contraceptives on skeletal health, sport injury and athletic ability.
通过对以往文献的归纳与总结，探讨口服避孕药对女运动员骨骼健康、运动性损伤和运动能力三方面的影响。
Through using the method of previous literature investigation, this paper discussed the effects of oral contraceptives on skeletal health, sport injury and athletic ability.
通过对以往文献的归纳与总结，探讨口服避孕药对女运动员骨骼健康、运动性损伤和运动能力三方面的影响。
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