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 2009-11-05

时间:2010-05-19 02:52来源:互联网 提供网友:mark@li   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)

That's the sound of clean coal. Well, cleaner coal. A relatively1 small unit attached to the smokestack at the Mountaineer Power Plant in West Virginia is capturing some 1.5 percent of the carbon dioxide the coal-fired plant would otherwise belch2 into the sky. 

The loud thrum comes from the whirring of fans that cool the flue gas and the jostling of an agitator3 that keeps things moving in the tower where the reaction to actually capture the CO2 takes place. There’s also the chug of the compressor, which turns the odorless, colorless greenhouse gas into a milky4 liquid at 1,400 pounds per square inch (psi). 

After that it's off to the storage wells where the fluid CO2 is further compressed to more than 2,000 psi and pumped a mile and a half underground where it's injected into the pores between grains of rock in a layer of sandstone laid down some 440 million years ago. 

So far so good for the Mountaineer , which cost the utility that owns it more than $70 million to build. But questions remain. What can be done to clean up coal's other problems, like toxic5 ash residue6 or the removal of actual mountaintops? Can carbon capture and storage be scaled up to the size necessary? to capture a significant fraction of the world's greenhouse gas emissions7 from fossil fuel burning?What will that cost? And will all that CO2 stay put?

After all, as the mayor of the Ohio town across the river from Mountaineer told me: carbon capture and storage sounds all well and good... until something happens.
 


点击收听单词发音收听单词发音  

1 relatively bkqzS3     
adv.比较...地,相对地
参考例句:
  • The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
  • The operation was relatively painless.手术相对来说不痛。
2 belch GuazY     
v.打嗝,喷出
参考例句:
  • Cucumber makes me belch.黃瓜吃得我打嗝。
  • Plant chimneys belch out dense smoke.工厂的烟囱冒出滚滚浓烟。
3 agitator 9zLzc6     
n.鼓动者;搅拌器
参考例句:
  • Hitler's just a self-educated street agitator.希特勒无非是个自学出身的街头煽动家罢了。
  • Mona had watched him grow into an arrogant political agitator.莫娜瞧着他成长为一个高傲的政治鼓动家。
4 milky JD0xg     
adj.牛奶的,多奶的;乳白色的
参考例句:
  • Alexander always has milky coffee at lunchtime.亚历山大总是在午餐时喝掺奶的咖啡。
  • I like a hot milky drink at bedtime.我喜欢睡前喝杯热奶饮料。
5 toxic inSwc     
adj.有毒的,因中毒引起的
参考例句:
  • The factory had accidentally released a quantity of toxic waste into the sea.这家工厂意外泄漏大量有毒废物到海中。
  • There is a risk that toxic chemicals might be blasted into the atmosphere.爆炸后有毒化学物质可能会进入大气层。
6 residue 6B0z1     
n.残余,剩余,残渣
参考例句:
  • Mary scraped the residue of food from the plates before putting them under water.玛丽在把盘子放入水之前先刮去上面的食物残渣。
  • Pesticide persistence beyond the critical period for control leads to residue problems.农药一旦超过控制的临界期,就会导致残留问题。
7 emissions 1a87f8769eb755734e056efecb5e2da9     
排放物( emission的名词复数 ); 散发物(尤指气体)
参考例句:
  • Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
  • Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。
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  colorless
顶一下
(1)
100%
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