Iranian President Mahmoud Ahmadinejad unveiled on Wednesday a new generation of centrifuges for uranium enrichment.
In a live broadcast by state TV, a model of the fourth generation of domestically-made centrifuge was presented.
The head of the Atomic Energy Organization of Iran, Fereidoon Abbasi, said in the ceremony that his country activated the first cascade of the new generation of centrifuges at its Natanz nuclear enrichment site on Wednesday.
Abbasi added that the move will, to a great degree, speed up the country's uranium enrichment activities and is a strong response to Western hostilities.
Earlier on Wednesday, a report by the local satellite TV from Natanz city said the new generation of the centrifuge is made of carbon fiber and performs three times as efficiently as the third generation.
Ahmadinejad also said 3,000 more centrifuges had been added to his country's uranium enrichment effort.
The developments underlined Teheran's determination to forge ahead with its nuclear activities despite increasingly tough sanctions from the West - and speculation that Israel or the United States could be months from launching military strikes against it.
Iran portrayed the advances as evidence it was only interested in peaceful nuclear goals, under the slogan "nuclear energy for all, nuclear weapons for none".
Russian Foreign Minister Sergei Lavrov on Wednesday urged Teheran to cooperate with the world's nuclear energy watchdog to resume stalled talks.
"We would like to encourage the Iranians to work with the agency, we encourage strongly for them to continue dialogue on specific suspicions," Lavrov said at a news conference in The Hague on a two-day visit to the Netherlands.
Lavrov's visit to the Netherlands comes as tensions rose between the West and Iran over Teheran's nuclear activities, which the United States and its allies fear masks a drive for atomic weapons.
不定式的特殊句型Why not
mean to doing/to do的区别
go on doing/to do的区别
many,old 和 far的区别
不定式中省略to的情况
感官动词 + doing/to do的区别
过去分词作宾语补足语的语法解析
介词to的用法
分词作定语的语法解析
不定式作补语的语法知识
try doing/to do的区别
助动词should,would的用法
remember doing/to do的区别
英语语法:the + 最高级 + 比较范围
分词作表语的语法应用
cease doing/to do的区别
动词不定式的否定形式
be interested doing/to do的区别
连词+分词(短语)的语法应用
分词的时态
It's for sb.和 It's of sb.的区别
助动词be的用法
分词的语态
助动词do 的用法
不定式作状语的语法应用
be afraid doing/to do的区别
regret doing/to do的区别
不定式作定语的语法解析
不定式的特殊句型so as to
助动词shall和will的用法
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