datum time
4.Arranging and analyzing the experimental datum, a unary linear regress formula was got, Y = -3.2471X + 1044.1, X-SO2 and O2 concentration ratio[mg/(m3·%)], Y- reaction time(min). This formula can accurately show the relationship between X and Y. The absorption reaction is a complex system including gas, liquid and solid.
6.For quasi-real-time method, the real-values of COG and SOG are calculated by Mid-Latitude, Mercator or Bowring sailing method, the geographic coordinates obtained from DGPS are taken as the original datum of the three sailing methods.
7.Applying the data of Food and Agriculture Organization of the United Nations(FAO),the text analyzed international trade changes of world major farm produce ascending century eighty time. At the same time,comparing the world,the text also analyzed China trade status of major farm produce aiming to provide basic datum and estimation for developing China farm produce trade.
9.Abstract: For quick understanding the states of embedded places of instruments and their operation conditions so as to find and handle problems in time,by helping of some typical illustrations ,the problems of drawing complex safety-monitoring engineering graphs are emphatically resolved using software EXCEL97 ,including two longitudinal coordinate values versus a transverse coordinate datum for two curves in a same figure;exchanging position of independent variable(x) and dependent variable(y); different start-points or frequency of data series and drawing displacement nonitoring network etc.
