b. Training courses for participants from developing countries on selected topics dealing with remote sensing, communications, satellite meteorology and space science (1 per year, 12-24 participants per training course);
b. 供发展中国家人员参加的有关遥感、通讯、人造卫星气象学和空间科学等选定课题的训练班（每年1次每个讲习班12至24名学员）；