| 1. | The satellite was launched in a rocket .
这颗卫星是装在火箭上发射的。 |
| 2. | News of the launch of a new satellite was no longer a sensation .
新卫星发射的消息就不再是耸人听闻的事了。 |
| 3. | The reason is a fundamental one associated with the mechanism of light emission .
其基本原因涉及到光发射的机理。 |
| 4. | Spontaneous photons initiate stimulated emission and the chain reaction begins .
自发发射的光子引起受激发射，开始了链式反应。 |
| 5. | A guided missile is one which is usually fired in a direction approximately towards the target .
通常导弹是大致对着目标方向发射的。 |
| 6. | By far the larger part of the energy emitted, however, is still carried by infrared waves .
不过，发射的绝大部分能量仍由红外波来传递。 |
| 7. | Both ionization and excitation lead to electronic transitions that may be the emission of light .
电离和激发都将导致可能伴随有光发射的电子跃迁。 |
| 8. | It will arrive at the earth with less frequency than a brother photon emitted on the earth .
它到达地球时的频率小于在地球上发射的同种光子的频率。 |
| 9. | The first geostationary communications satellite, known as early bird, went into orbit in 1965 .
人们所知道的第一个地球同步通信卫星“晨鸟”是1965年发射的。 |
| 10. | Planck found it necessary to assume that the light was emitted as a series of little bursts of energy .
普朗克认为必须假设发射的光是一系列很小的能量的点射。 |
