The development process of high-voltage electric power equipment maintenance was introduced. It is pointed out that the trend of high-voltage electric power equ
Genesis of low-resistivity oil layers from cretaceous system in Luxi area was studied. The result shows that the resistivity of oil layers is lower than that of
With the development of GPS carrier wave phase technology, it becomes possible that the height accuracy of centimeter level is got by GPS RTK technology. Vessel attitudes are very important parameters