The postnoon sector at cusp latitude is a abnormal plasma process region.
极尖纬度午后区是一个异常等离子体过程区，已发现该区在低地磁扰动条件下，多种空间物理现象活动强度极大（相对邻区）：强的向上场向电流，向下低能电子流极大，向上离子通量极大，Ｆ层电子密度极大等等。
Based on auroral observations of a multi channels scanning photometer at Zhongshan Station, Antarctica and solar wind parameters data obtained by WIND Satellite at the upstream of the bow shock in 1997 and 1998, the dependence of the high latitude postnoon auroral intensity upon the solar wind parameters are studied quantitatively.
研究表明 ,午后极光 6 3 0 。
It is examined that postnoon aurora observed at Zhongshan station (invariant latitude 74.
５Ｓ，ＭＬＴ＝ ＵＴ＋ ２）利用全天空极光摄像机和三波段极光扫描光度计观测到的午后极光进行了分析，发现宁静日午后极光的形态随磁地方时变化。
an afternoon sleep, performance, train
午觉、 午后表演、 下午班火车
Of, relating to, or taking place in the afternoon.
午后的下午的，与下午有关的，或发生于下午的
a gray, rainy afternoon
一个昏暗、下雨的午后
Clear in the morning, cloudy later.
早上晴朗，午后多云。
A misty morning usher in a fine afternoon .
早晨地罩雾，午后晒衣裤。
It was a summer afternoon.
那是个夏日的午后。
The director will block this afternoon.
今天午后导演将排演。
Pan's hour, the faunal noon.
潘的时刻，牧神的午后。
She naps everyday after lunch for an hour.
她每天中午吃过午餐后都要午休一小时。
Do you eat supper before or after lunch?
你午饭前吃晚饭还是午饭后吃晚饭？
He makes a habit of taking a nap after lunch.
他午饭后睡午觉已经成为一种习惯了。
86 We have a nap(interval)after lunch in hot season.
热天午餐后，我们有一个午睡（中休）时间。
After lunch, you will go to the heavy plate workshop.
午饭以后参观厚板车间。
Jane didn't get back till after midnight.
简直到午夜以后才回来。
lie down and rest an hour after lunch
午饭后躺下休息一小时
After lunch in the Souvenir Shop.
午饭后在纪念品商店。
In the afternoon I play basketball after school.
下午放学后我去打篮球；
Then, it's time for lunch.
然后，午餐时间到了。