主题：日本福岛核电站传来爆炸声 -- 葡萄

Air pressure inside reactor 2 rose suddenly when the air flow gauge was accidentally turned off. That blocked the flow of water into the reactor, leading to the water level dropping and the rods being exposed at about 2300 local time (1400 GMT).

一号和三号反应堆爆炸以后，这群蠢货尽然把二号反应堆的气流阀关了，导致水位下降，燃料棒暴露。

Exposure for too long a period of time can damage the fuel rods and raise the risk of overheating and possible meltdown.

Chief Cabinet Secretary Yukio Edano said there were signs that the fuel rods were melting in all three reactors at Fukushima Daiichi.

The fuel rod exposure at Fukushima Daiichi number 2 reactor is potentially the most serious event so far at the plant.

A local government official confirmed the fuel rods were at one point largely, if not totally exposed; but we do not know for how long.

Without coolant around the rods, temperatures can rise to hundreds of degrees Celsius, almost certainly resulting in some melting.

This opens the possibility of a serious meltdown - where molten, highly radioactive reactor core falls through the floor of the containment vessel and into the ground underneath.

However, engineers appear to have restored some water flow into the reactor vessel and if they are successful, temperatures will begin to fall again rapidly.

如果最后融穿很难避免，中国应该和其它周边国家一起要求甚至强迫日本用水泥封闭反应堆以避免进一步污染大气。污染土壤地下水是日本自找的（一系列的失误），如果污染大气周边国家就全要遭殃了。

我现在对日本政府公布的信息根本无法相信。我觉得应该由周边国家派飞机去灾区实地采样分析，并以此为基础在灾后向日本政府索赔。从最新的报道来看，这次事故发展到现在这种程度很大程度上不是天灾而是人祸。

复风向和洋流的原因，注定美国和加拿大比我们更着急。

家园

我不能说你是错的

我对这方面，就是门外汉，我相信，绝大多数人都是门外汉。但为什么大家好像都很懂？比如你的回复。你真这么确定？

复我不能说你是错的

家园

核物理的东西是大学修的，研究生阶段没接触过，但这次灾害

对其他国家的影响主要是放射性尘埃这一点还是知道的。

尘埃随什么扩散？北纬西风带在哪里？北太平洋暖流怎么流的？

做一点research不难，要不了你几分钟。不要以为别人都是拍脑子瞎说。