cloud radioactive的意思|示意

The positrons, produced by the decay of radioactive sodium, are cooled into a similarly sized cloud of around 1m particles and held in a neighbouring trap.

由放射性钠衰变产生正电子，冷却后形成一个由大约100万个正电子组成的体积同样大小的粒子云团，这团正电子被存放在相邻的一个容器中。

This exposure could come from the release of radioactive material from the plant into the environment, usually characterized by a plume (cloud-like) formation.

站中核物质泄漏到外界环境中就会引起核辐射，通常呈向上的云状。

To wags during the cold war, ground zero was a favoured spot: better to be incinerated in the first mushroom cloud, they joshed, than to wake up to a world of radioactive rubble.

对于冷战期间诙谐幽默的人来说更愿意选择地面零点：他们冷嘲到，在第一个蘑菇云出现时就被烧死总比过后意识到全世界到处都有放射性物质要好。

It burned for 10 days and released a cloud of radioactive matter that spread over a wide area of the USSR.

它整整燃烧了10天，产生的放射性物质云笼罩了前苏联的大片地区。

There is no such thing as a radiation cloud. There can be however radioactive material. Radiation itself expands in all directions just as white light does.

根本就没有辐射云这一说。到处都可能有核物质。辐射就像光线一样四处分散。

In its early stages the rain was augmented by the small water droplets still descending from the radioactive cloud.

开始时，从放射性云下沉的小水滴使雨势增大。