| 1. | Particle concentrations in the upper atmosphere drop regularly as the altitude rises .
在高层大气中粒子浓度随高度的增加而有规律地下降。 |
| 2. | The spherical particles are swept as droplets or volatilized and recondensed from a meteorite as it is heated to incandescence by friction in the upper atmosphere .
球形粒子是由小滴吹刮或者由在高层大气中被摩擦加热到白炽化的陨石挥发并重新凝结而成。 |
| 3. | It ' s in the upper atmosphere
这是高层大气产生的现象 |
| 4. | Tephigram showing the temperature , dew point and wind in the upper atmosphere
图5温熵图显示高空的气温露点及风 |
| 5. | Recent studies of the upper atmosphere have shown these assumptions to be incorrect
最近在大气层顶层进行的研究表明这些设想是错误的。 |
| 6. | Ozone occurs naturally in the upper atmosphere and helps to mop up ultraviolet radiation
臭氧自然发生在上层大气层，帮助抹去紫外线幅射。 |
| 7. | In the upper atmosphere , ozone shields the earth from the harmful ultraviolet radiation
臭氧在大气层的作用是阻挡太阳释放出来的有害紫外线。 |
| 8. | In the upper atmosphere , ozone shields the earth from the harmful ultraviolet radiation
臭氧在大气层的作用是阻挡太阳释放出来的有害紫外线。 |
| 9. | Some , however , are the result of collisions between cosmic rays and the gases of the upper atmosphere
但有一些则是宇宙射线和外层大气碰撞的结果。 |
| 10. | The first - stage vehicle is used to launch the rocket and is then jettisoned in the upper atmosphere
第一级运载火箭是用来发射火箭的,进入高层大气后即抛掉 |
