- Sektör: Government
- Number of terms: 3992
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An estimate, derived by the U. S. EPA with an uncertainty spanning perhaps an order of magnitude) of a daily exposure to the human population, (including sensitive subgroups) that is likely to be without appreciable risk of deleterious effects during a lifetime of exposure. The RfC is derived from a no or lowest observed adverse effect level from human or animal exposures, to which uncertainty or "safety" factors are applied.
Industry:Pollution control
使用压缩机把空气吸入发动机并对其进行压缩的发动机。燃油与空气的混合气体在燃烧室内燃烧。燃烧的热气体排除发动机并带动涡轮机,而涡轮机同时带动压缩机。发动机的动力输出可以通过压缩机或发动机侧的涡轮机提供。
Industry:Pollution control
An engine in which air and fuel are introduced into cylinders, compressed by pistons and ignited by a spark plug or by compression. Combustion in the cylinders pushes the pistons sequentially, transferring energy to the crankshaft, causing it to rotate.
Industry:Pollution control
An electrochemical cell which captures the electrical energy of a chemical reaction between fuels such as liquid hydrogen and liquid oxygen and converts it directly and continuously into the energy of a direct electrical current. For more information, please go to ARB's fuel cell portal page.
Industry:Pollution control
An air pollution control device that removes particulate matter from an air stream by imparting an electrical charge to the particles for mechanical collection at an electrode. For more information, please see our associated training class on this subject.
Industry:Pollution control
空气污染物,在章程确定的 ARB,这可能导致或有助于增加在死亡或严重的疾病,或可能构成对人类健康的目前或潜在的危害。根据不同的规管进程 (加州健康和安全的代码节 39650 及续) 比受 CAAQSs 的污染物被认为总可捕量。总可捕量对健康的影响可能出现在极低的水平,并且通常很难确定不产生的不利健康影响的接触水平。有关详细信息,请查看我们的毒物网站。
Industry:Pollution control