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
mortalis查看 mortalis 在百度字典中的解释百度英翻中〔查看〕
mortalis查看 mortalis 在Google字典中的解释Google英翻中〔查看〕
mortalis查看 mortalis 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:


  • Hexavalent Chromium - Overview | Occupational Safety and Health . . .
    Hexavalent chromium [Cr (VI)] is one of the valence states (+6) of the element chromium It is usually produced by an industrial process Cr (VI) is known to cause cancer In addition, it targets the respiratory system, kidneys, liver, skin and eyes Chromium metal is added to alloy steel to increase hardenability and corrosion resistance A major source of worker exposure to Cr (VI) occurs
  • Controlling Hazardous Fume and
    Welding and Hexavalent Chromium Chromium is a component in stainless steel, nonferrous alloys, chromate coatings and some welding consumables Chromium is converted to its hexavalent state, Cr(VI), during the welding process Cr(VI) fume is highly toxic and can damage the eyes, skin, nose, throat, and lungs and cause cancer
  • FactSheet - Occupational Safety and Health Administration
    FactSheet Health Effects of Hexavalent Chromium Hexavalent chromium is a toxic form of the element chromium Hexavalent chromium compounds are man-made and widely used in many different industries Some major industrial sources of hexavalent chromium are:
  • Hexavalent Chromium - Occupational Safety and Health Administration
    Provides a concise list of industrial sources, symptoms and health effects of exposure to hexavalent chromium, and OSHA requirements for the protection of employees
  • Toxic Metals - Occupational Safety and Health Administration
    Toxic metals, including "heavy metals," are individual metals and metal compounds that negatively affect people's health Some toxic, semi-metallic elements, including arsenic and selenium, are discussed in this page In very small amounts, many of these metals are necessary to support life However, in larger amounts, they become toxic
  • 1910. 1026 - Chromium (VI). | Occupational Safety and Health Administration
    Chromium (VI) [hexavalent chromium or Cr (VI)] means chromium with a valence of positive six, in any form and in any compound Director means the Director of the National Institute for Occupational Safety and Health (NIOSH), U S Department of Health and Human Services, or designee
  • FactSheet - Occupational Safety and Health Administration
    FactSheet Hexavalent Chromium Hazards in Bridge Painting Hexavalent chromium or Cr(VI) is a toxic form of chromium that can cause severe health effects to workers, including lung cancer Chromium compounds are added to paints and primers to provide corrosion protection and reflective properties
  • Controlling Exposure to Hexavalent Chromium in Aerospace and Air . . .
    Controlling Exposure to Hexavalent Chromium in Aerospace and Air Transport Painting Hexavalent chromium or Cr(VI) is a toxic form of chromium which can cause severe health effects to workers, including lung cancer Chromium compounds are added to paints and primers to provide corrosion protection and to create specific colors Painting operations in the aerospace and air transportation
  • Chromium - Occupational Safety and Health Administration
    Chromium III is an essential trace element in humans but chronic exposure may be harmful Chromium VI (hexavalent chromium) is the oxidized state of principal concern in occupational safety and health and the environment because of its extreme toxicity and designation as a human carcinogen
  • Hexavalent Chromium - Standards | Occupational Safety and Health . . .
    Hexavalent Chromium Standards Requirements to protect workers from Cr (VI) exposure are addressed in specific OSHA standards for general industry, maritime, and construction This section highlights OSHA standards and documents related to the chromium (VI) OSHA Standards State Plan Standards





中文字典-英文字典  2005-2009