I won three other competition  = I won three competions with my senior work. our = Our project's subject was that it could increase fuel efficiency by installing hybrid system in mass production vehicle. we had very = We have a very  hard time to finish the project. First, we had calculated gear ratio and we designed sprockets which would be changed with original disk brake. In addition, after calculating safely index, we had choosen what is the best ideal material and the sprockets was produced by outsourcing. However, it was quite different between designing and manufactuaring. Therefore, so many problems happend while we are manufacturing it. As a result we could complete our project without problem. I can't forgot the time I shouted for joy with my teem = team member when we made it work well.