3类疟疾流行区
Three patterns of malaria-endemic area
并行流分类
parallel packet classification
大流行流感疫苗
Pandemic influenza vaccine
Pandemic influenza vaccines
大山区型血吸虫病流行区
mountainous endemic region of schistosomiasis
分流分级
diffluence and classification
分流分沙
diversion of flow and sediment
flow and sediment diffluence
flow division and sediment division
分流分相
flow extraction and separation
extracting and sampling method