A study of the dutch twin registry examined both enironmental and genetic risk factors in susceptibility to asthma , eczema , and rhinitis in a large group of children 一项研究荷兰双胞胎登记册的调查显示环境和遗传有害因素都会增加大量儿童对哮喘、湿疹和鼻炎的易感性。
Thus , the fact that twins grow up in the same house and experience the same enironmental risk factors , does not contribute by itself to the ariance in susceptibility to asthma 因此，事实真相是在同一住宅内长大的双胞胎经历相同的环境有害因素，而这本身不会促使他们对哮喘的易感性发生变化。
Fane . cn does not warrant that the web site or the servers which make this web site available or electronic communications sent by fane . cn are free from viruses or any other harmful elements 翻译中国不保证本网站或供您进入本网站的服务器或翻译中国发送的任何电子信息没有病毒或任何其他有害因素。
Methods : to make an investigation into the occupation health conditions of the mineral lorry drivers , determine the harmful factors and carry out occupation health checkup among the drivers 方法：对矿运汽车司机的作业环境进行职业卫生现状调查分析、有害因素检测，并对矿运司机进行了职业健康检查。
Conclusion : the decribed method separating 33 organic solvents in the air of workplace satisfactorily is fast and sensitive with satisfied precision and accuracy 结论：所建立的方法对工作场所空气中多种有机溶剂组份分离度好，检测快速、灵敏，有较好的精密度与准确度，有利于工作场所空气有害因素监测。
Yiyol . com does not warrant that the web site or the servers which make this web site available or electronic communications sent by yiyol . com are free from viruses or any other harmful elements 译友在线不保证本网站或供您进入本网站的服务器或译友在线发送的任何电子信息没有病毒或任何其他有害因素。
If the influence of the home enironmental risk factors depends on genotype , as suggested by these results , genotype - enironment explains the large heritability for asthma and related disorders 象这些结果所显示的一样，如果家庭环境有害因素的影响依赖于遗传型，那么遗传型环境就能解释其对哮喘和相关病症巨大遗传可能性。
Occupational - disease - inductive factors include the various harmful chemical , physical and biologic factors harbored in the occupational activities and other occupational - disease - inductive factors in the operation 职业病危害因素包括：职业活动中存在的各种有害的化学、物理、生物因素以及在作业过程中产生的其他职业有害因素。
Article 1 this law is enacted for the purpose of ensuring food hygiene , preventing food contamination and harmful substances from injuring human health , safeguarding the health of the people and improving their physical fitness 第一条为保证食品卫生，防止食品污染和有害因素对人体的危害，保障人民身体健康，增强人民体制，制定本法。
Increased urban pollution levels and the mounting death toll from motor vehicles accidents can mainly be attributed to the glut of automobiles appearing on city roads in recent years . detrimental factors will quite likely outweigh the benefits of rising automobile usage 城市人口的增长和车祸中死亡率的增加主要是由于近年内充斥城市道路的汽车。汽车使用量的增加带来的有害因素很有可能超过它的好处。
