America's "work-study lesson plan," the German "dual vocational training system," Japan's "industry cooperation" training system, have received very good results.
To meet the 2008 Olympic Games, "downsizing" plan, Liard developed a surface mount dual color displays, a lot of time for the training center and game scoring.
The 'time scale network' was worked out by building the dual-code network plan into the time coordinate, which can make the network graph more readable.