流行病

AIDS has produced one of the worst pandemics ever known.

艾滋病是迄今最恶劣的世界流行病之一。

The world is already suffering pandemics of AIDS, tuberculosis and malaria.

这个世界已经饱受艾滋病，肺结核和疟疾这些全球性流行病的威胁。

In this article, we'll focus on one of the pandemics that the world faced in the early twentieth century which resulted in widespread death and panic.

在这篇文章中，我们将着重于其中的流行病说，世界面临着在20世纪初，导致广泛的死亡和恐慌。

Epidemiological data going back over a hundred years show that influenza pandemics occur about every 30 years.

近百年的流行病学数据显示，流感大流行大约每30年出现1次。

The financial crisis, climate change, pandemics, terrorism and other international threats prove that the fates of all people are linked.

金融危机，气候变化，流行病，恐怖主义和其它国际威胁证明，所有的人的命运是联系在一起的。

The evaluation of exposure to PAHs can provide evidence for epidemiological study and risk assessment of the pollutants.

对PAHs的暴露评价可为流行病学研究和污染物风险评价等提供依据。

Methods:The epidemiologic data of workrs and staff members in a chemical industry were analyzed by comparing the distribution of age,weight,BMI,FPG and postprandial glucose（2hPG）among nondrinker,drinker and these who had alyeady guit drinking.

对某大型化工企业集团6387名职工糖尿病流行病调查数据进行分析，计算饮酒量，比较不同饮酒状况及饮酒量人群的年龄、体重、体重指数、空腹血糖以及餐后血糖，以不同饮酒量情况下糖尿病患病率和相对危险度。

"Given the rapid aging of the US population, the potential public health burden of late-life mental health disorders will likely grow as well, suggesting the importance of continued epidemiologic monitoring of the mental health status of the young-old, mid-old, old-old, and oldest-old cohorts," the researchers conclude.

研究者结论表示，因为美国人口迅速老化，可能的公卫负担以及晚年的心智健康异常也会增加，持续对少老组、中老祖、耆老组与最老组进行心智健康状态流行病学监测是相当重要的。

The main results are:(1) The cumulate cause-effects model was demonstrated at both macro and micro level data. The problem of data fitting of hypertension prevalence data was solved well enough with the cumulate cause-effects model. The parameters of the model were meaningful for the practice.(2) Taking the hypertension developing speed as an indicator of health equality of hypertension between urban and rural residents in China and discovered the macro level determinants of it.(3) The causal network was testified by the structure equation model.(4) It is found that the major determinants of hypertension prevalence in China is population ageing, overweight, lifestyle changing due to high economic developing speed and the lagging behind of health education.

主要的研究成果有：(1)首次观测到我国高血压的患病率曲线符合累积风险效应模型，解决了高血压患病率资料数据拟合中长期存在的方法学问题，并对模型中参数的实际流行病学意义给出了合理的解释，能够对疾病的发病率进行间接的估计；(2)提出了用高血压的发展速度作为衡量我国城乡高血压造成的健康不平等的重要指标，解决了我国高血压患病率评价中长期存在的一些错误性认识，揭示了我国高血压城乡发展不平衡的宏观决定因素；(3)利用结构方程模型对构建的网络模型进行拟合分析，证明了模型的有效性；(4)揭示了目前影响我国高血压发展趋势的决定因素，主要包括人口老龄化趋势加剧、超重人口比例增加、经济的快速发展带来生活方式的转变和健康教育的相对滞后等几个方面。

Majority of the studies reported in the endodontics literature was conducted in European populations, few studies assessed endodontics treatment outcomes in Chinese populations.

但是，流行病学调查显示，被治疗牙的根尖周状况并未得到相应的改善，仍有相当数量的牙存在根尖周病变。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。