AIM: To study the seasonal variations of mite specific antibodies in serum from asthma patients and breeding densities in their bedrooms.
目的：探讨哮喘患者血清免疫学指标及患者室内尘螨孳生密度的季节变化规律。
2
Under new feeding method of Apis cerana cerana seasonal management, the skill of breeding right age overwintering bee flock and the cutting off offspring by imprisonment should be undertaken.
在新法饲养中蜂季节性管理中，必须采取培育适龄越冬蜂并适时幽王断于的技术措施。
3
The distribution, breeding habits and seasonal fluctuation of the various mosquito larvae were studied at eight breeding places in the Mountain Resort from 1985 to 1995.