| 1. | All rays leaving the laser are in phase .
由激光发射出的光线都是同位的。 |
| 2. | Alpha particles emitted by radioactive nuclei have energies of a few mev .
由放射性原子核发射出的粒子能量一般为几个Mev。 |
| 3. | Many material, if given the proper energy, such as by heating, give off light .
许多材料在得到适当的能量（比如在受到加热）时，都会发射出光。 |
| 4. | the amount of light yielded by fluors from the collisions of a β particle is diminishingly small.
荧光体粒子碰撞，发射出的光量很小，而且继续缩小。 |
| 5. | Light from ordinary stars and galaxies comes largely from atoms powered by thermonuclear reactions in the hearts of stars .
来自一般恒星和星系的光，主要是那些受恒星内部的热核反应所激发的原子发射出的。 |
| 6. | A attaining altitudes of over one hundred metres
可以发射出一百米 |
| 7. | A attaining altitudes of over one hundred metres
可以发射出一百米 |
| 8. | As matter falls onto the neutron star , it gives off x - rays
当伴星物质陷落到中子星上时，它就发射出x射线。 |
| 9. | Isotopes that emit radioactive particles ; a stove emitting heat
发射出放射性粒子的同位素；发出热量的炉子 |
| 10. | A tan is created by uv rays penetrating the upper layers of your skin
晒黑机能够发射出紫外线，穿透您的上层肌肤。 |
