The quasi - geoid computed by geopotential model is fitted with the quasi - geoid measured by GPS leveling.将地球位模型计算的阜新似大地水准面拟合于GPS水准实测的似大地水准面.Geodetic leveling should be done with staves in which the onstrip of invar.大地水...
Among the properties which do not show a leveling - off are the viscosities of solutions and melts.溶液和熔体的粘度等性能曲线并不呈现平坦.The main products are light roller, concrete leveling machine, engineering, light trucks.主要产品有轻型压路机 、...