1 cooling water quality requirements 2 cooling water system preheating requirements 3 cooling water flow direction and velocity requirements 4 cooling water temperature regulating valve requirements 5 central cooling system cooling water requirements 6 requirements between cooling water pressure and lubricating oil pressure and seawater pressure! That's all I can think of. I can't remember the data without the details of the book. You can write about two thousand by yourself at six o'clock! ! It seems that you are really pushed! haha