英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
certainness查看　certainness　在百度字典中的解释百度英翻中〔查看〕
certainness查看　certainness　在Google字典中的解释Google英翻中〔查看〕
certainness查看　certainness　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Radiation: Ultraviolet (UV) radiation
    What is the difference between UVA, UVB and UVC? The three types of UV radiation are classified according to their wavelength They differ in their biological activity and the extent to which they can penetrate the skin The shorter the wavelength, the more harmful the UV radiation
  • Rayonnement ultraviolet - World Health Organization (WHO)
    Dans notre environnement, le soleil est de loin la source de rayonnement ultraviolet la plus importante Le soleil émet de la lumière, de la chaleur et des rayons ultraviolets (UV) Exactement comme la lumière visible est composée de différentes couleurs visibles dans un arc-en-ciel, le spectre du rayonnement UV est divisé en trois régions : les UVA, les UVB et les UVC Lorsque les
  • Ultraviolet radiation - World Health Organization (WHO)
    Ultraviolet (UV) radiation covers the wavelength range of 100–400 nm, which is a higher frequency and lower wavelength than visible light UV radiation comes naturally from the sun, but it can also be created by artificial sources used in industry, commerce and recreation
  • Radiation: The known health effects of ultraviolet radiation
    UV radiation can cause short- and long-term health effects on the skin In addition to the well-known short-term effects such as sunburn or allergic reactions, long-term effects like skin cancer represent a chronic health risk Skin cancer risk is strongly correlated with the duration and frequency of sun exposure over one’s lifetime Cumulative UV dose is related to the development of
  • Anxiety disorders - World Health Organization (WHO)
    WHO fact sheet about anxiety disorders, including information on symptoms, contributing factors, prevention, diagnosis, treatment, self-care and WHO's work in this area
  • Solar ultraviolet (UV) radiation exposure
    The GHO data repository is WHO's gateway to health-related statistics for its 194 Member States It provides access to over 1000 health topics indicators
  • Webinar: Disinfection using Ultraviolet Radiation
    BackgroundThe ability of ultraviolet radiation to disinfect water, surfaces and air has been known for over a hundred years In the last few decades, the primary application across the world has been water disinfection, but it has also matured as a means of disinfection in healthcare and other environments The COVID-19 pandemic has highlighted the potential for UV radiation to manage the
  • Les effets connus des UV sur la santé
    Les UV-A ont une longueur d’onde supérieure à celle des UV-B et pénètrent donc plus profondément dans les couches de l’œil et de la peau En outre, les UV-A dégagent moins d'énergie que les UV-B Les UV-A et les UV-B peuvent donc avoir des effets différents sur le plan biologique et de la santé Les UV-A pénètrent profondément dans la peau et peuvent atteindre le derme et l
  • Asthma - World Health Organization (WHO)
    WHO factsheet on asthma providing key facts, causes, reducing the burden, prevention and control
  • 肥胖和超重 - World Health Organization (WHO)
    概述 超重是脂肪沉积过多的一种状况。 世界卫生组织（世卫组织）将肥胖症归类为一种慢性复发性疾病，是由遗传学、神经生物学、饮食行为、获得健康饮食的机会、市场力量和大环境之间复杂的相互作用引起的。在过去几十年里，随着各国粮食安全得到加强、社会经济发展以及全球化和粮食体系





中文字典-英文字典  2005-2009