The results show that the inhomogeneous distribution of temperature advection in upper jet stream trigger vertical currents in the marginalarea of upper jet stream and cause airplane turbulence.
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 marginalarea.
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。
3
Calculated as area below the price line that is above marginal cost.