A non-circular flat motor in which terminal portions are installed at dead spaces and a manufacturing method. In the engine control unit, an actual discharge pressure of the gas booster and the reference discharge pressure are compared. The C-dots can be varied in their color by change of their size and by the amount of oxidative groups’ position on each C-dot. 05 when color development is started in 30 minutes after exposure with an exposure amount that gives a density of 1. The phosphor comprises a material having a general composition formula expressed by M1Si6N8-XOX, where M is alkaline earth metal.