Apart from the secondary water supply systems, the drainage systems and the air-raid shelters, no significant difference was found in the positive rates between the central area and the marginal area.
除二次供水、市政排水设施和防空洞外，中心城区与边缘城区蚊孳生阳性率无明显差别。
Apart from the secondary water supply systems, the drainage systems and the air-raid shelters, no significant difference was found in the positive rates between the central area and the marginal area.
除二次供水、市政排水设施和防空洞外，中心城区与边缘城区蚊孳生阳性率无明显差别。
应用推荐