Its only present rival, the euro, has a much smaller circle of influence, counting 25 devotees, beyond the 17 members of the euro zone itself (see chart).
Note the number 360* on the Hexagon Chart . It completes a circle of 360* .
注意在六边形上360度的数字，它代表一个360度的循环终结的位置。
3
Extended navigation parameters (ENP) and great circle flight path (GCFP) calculated algorithms are presented in detail and the algorithm flow chart is presented.