英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

SSS 2011-03-14

时间:2011-04-27 05:24来源:互联网 提供网友:geologyforget   字体: [ ]
特别声明:本栏目内容均从网络收集或者网友提供,供仅参考试用,我们无法保证内容完整和正确。如果资料损害了您的权益,请与站长联系,我们将及时删除并致以歉意。
    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Steve Mirsky. This will just take a minute.

"The type of accident that is occurring in Japan is known as the station blackout: loss of off-site AC power—power lines are down—and then a subsequent failure of emergency power on-site, the diesel1 generators2. The station blackout has been one of the great concerns for decades."

Physicist3 Ken4 Bergeron, speaking on March 12 during a press briefing. He worked on nuclear reactor5 accident analysis at Sandia National Laboratories.

"The probability is hard to calculate primarily because of the possibility of what are called common-cause accidents, where the loss of off-site power and of on-site power are caused by the same thing. In this case the earthquake and tsunami6. We're hoping that all of the barriers to release of radioactivity will not fail. So far the first barrier, which is the fuel cladding, has apparently7 failed, because they are detecting cesium. We now have to hope that the subsequent layers, including primarily the containment8 building, will succeed in preventing release of major amounts of radioactivity."

Thanks for the minute. For Scientific American's 60-Second Science, I'm Steve Mirsky.

For more from Bergeron, see my article on the SciAm Web site "Nuclear Experts Explain Worst-Case Scenario at Fukushima Power Plant"


点击收听单词发音收听单词发音  

1 diesel ql6zo     
n.柴油发动机,内燃机
参考例句:
  • We experimented with diesel engines to drive the pumps.我们试着用柴油机来带动水泵。
  • My tractor operates on diesel oil.我的那台拖拉机用柴油开动。
2 generators 49511c3cf5edacaa03c4198875f15e4e     
n.发电机,发生器( generator的名词复数 );电力公司
参考例句:
  • The factory's emergency generators were used during the power cut. 工厂应急发电机在停电期间用上了。
  • Power can be fed from wind generators into the electricity grid system. 电力可以从风力发电机流入输电网。 来自《简明英汉词典》
3 physicist oNqx4     
n.物理学家,研究物理学的人
参考例句:
  • He is a physicist of the first rank.他是一流的物理学家。
  • The successful physicist never puts on airs.这位卓有成就的物理学家从不摆架子。
4 ken k3WxV     
n.视野,知识领域
参考例句:
  • Such things are beyond my ken.我可不懂这些事。
  • Abstract words are beyond the ken of children.抽象的言辞超出小孩所理解的范围.
5 reactor jTnxL     
n.反应器;反应堆
参考例句:
  • The atomic reactor generates enormous amounts of thermal energy.原子反应堆发出大量的热能。
  • Inside the reactor the large molecules are cracked into smaller molecules.在反应堆里,大分子裂变为小分子。
6 tsunami bpAyo     
n.海啸
参考例句:
  • Powerful quake sparks tsunami warning in Japan.大地震触发了日本的海啸预警。
  • Coastlines all around the Indian Ocean inundated by a huge tsunami.大海啸把印度洋沿岸地区都淹没了。
7 apparently tMmyQ     
adv.显然地;表面上,似乎
参考例句:
  • An apparently blind alley leads suddenly into an open space.山穷水尽,豁然开朗。
  • He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
8 containment fZnyi     
n.阻止,遏制;容量
参考例句:
  • Your list might include such things as cost containment,quality,or customer satisfaction.你的清单上应列有诸如成本控制、产品质量、客户满意程度等内容。
  • Insularity and self-containment,it is argued,go hand in hand.他们争论说,心胸狭窄和自我封闭是并存的。
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   sss  托福素材
顶一下
(0)
0%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴