|
|
| כלל. |
镭射气第86号元素; 氯Rn; 氡 Rn (射气同位素,Em²²²) |
| .חַקלָ |
氡 (Rn, 86号元素，旧名 Niton,亦称 radium emanation) |
| .טֶכנו |
镭射气 |
| .מֵטַל |
氡 (Rn) |
| .מֶרחָ |
氡 (化学元素，符号 Rn) |
| .מדעי |
氡; 氡化学元素 |
| .מכשיר |
氨Rn［放射性气体］ |
| .רְפוּ |
氨; 镭射器 |
| .תְעוּ |
〔化〕 氡 |
|
|
| .כִּימ |
氡 (niton) |
|
|
radon A radioactive gaseous element emitted naturally from rocks and minerals where radioactive elements are present. It is released in non-coal mines, e.g. tin, iron, fluorspar, uranium. Radon is an alpha particle emitter as are its decay products and has been indicted as a cause of excessive occurrence of lung cancer in uranium miners. Concern has been expressed at radon levels in some housing usually adjacent to granite rocks or old tin mining regions ['reidɔn] נ | |
|
|
氡 (从有放射性物质的石头和矿产中自然释放的放射性气体。产生于非碳的矿，例如锡矿、铁矿、氟石和铀矿。氡衰变产生阿尔法粒子辐射，并被认为是氟石矿的矿工多发肺癌的根源。在临近花岗岩或旧锡矿的地区，氡的浓度应被关注。) |
|
| אנגלית אוצר מילים |
|
|
Radon ['reɪdɒn, -dɑːn] קיצור. | |
|
| .נוֹטָ, .סקוטי |
Rn |
|
|
|
radar beacon |
