At any point, if the sun elevation or sun azimuth errors or the momentum vector error exceeds tolerances, the ACS will return to an appropriate mode in order to correct the problem.
The text introduces several problems of should be noticed during designing gravity type sinking-well in order to ensure the well foundation sunk to the design elevation smoothly.
Finally, opening the flood diversion work's gate is through blasting or manpower, and the open order influences the discharge and elevation of water in main river.