dayside

there are times when the field is northward and there are strong flows in the dayside polar ionosphere.

在磁场方向为北的情况下，电离层白昼侧的极地地区也有很强的能量传递。

Under the quiet solar wind condition, the dayside magnetopause is at about 10R_E from the center of the Earth.

向日面磁层顶在平静太阳风条件下，处于10RE（RE为地球半径）左右。

the dayside has the most direct contact with the solar wind.

行星的光面（白昼侧）与太阳风有着最直接的接触。

the wind compresses the earth's magnetic field on the dayside of the planet-the side facing the sun-and stretches the field on the nightside to form a long tail resembling that of a comet.

太阳风在地球昼侧（向阳面）挤压磁场，将夜侧磁场拉成一条长长的尾巴，就像彗星的彗尾。

x-rays bathed the dayside of our planet and sent waves of ionization rippling through the atmosphere over europe.

X射线在经过我们星球时，将光波离子化，并且穿过欧洲上空的大气层。