occasional transmission meaning in Chinese

非经常传输
临时传输

[ satellite news gathering ( sng ) is the temporary and occasional transmission with short notice of television or sound for broadcasting purposes , using highly portable or transportable uplink earth stations operating in the framework of the fixed - satellite service
卫星新闻采集( sng )是临时和偶发传输电视或声音短小信息为广播目的,使用极为便携的或可移动对空地面通讯电台而在固定卫星服务范围内的业务。