振荡调制 meaning in Chinese

modulation of oscillations

( 3 ) the frequency modulation effects of positive ( negative ) dipole or unipole forcing source on lfo in the mid - high latitudes are difference
( 3 )正、负偶(单)极强迫源对中高纬大气的低频振荡调制作用不同。
( 5 ) the frequency modulation effects of positive ( negative ) dipole and positive ( negative ) unipole forcing source on lfo have the same sensitive region
( 5 )正(负)偶极和正(负)单极对大气的低频振荡调制有相同的敏感区。
But in the east , 30 ~ 60 - day low frequency propagates toward north and west and 10 ~ 20 - day low frequency spreads to south from mid - latitude as well as to east from 90 " e . 10 - 20 - day and 30 - 60 - day low frequent rain band centers , located in south china , upper - middle yangtze basins , northeast china , north china and the west part of china , are all important parts of asian summer monsoon rainfall
东部地区， 30一60天振荡有明显的向北及向西传播; 10一20天低频降水随位相从中纬度向南传播，同时从90 ? e向东传播。东部地区的10一20天和30一60天低频雨带中心都是东亚夏季风降水的重要组成部分，当地的夏季风降水受这两种低频振荡调制。