Cutaway Model Of An Internal Combustion Engine With A Blackboard In The Background And German Text `Der Verbrennungsmotor` `Combustion Engine`.

KEYWORDS

backdrop background blackboard board car combustion concept construction crosssection cut cutaway cylinder der drive engine engineer engineering explain fourstroke function gasoline german germany inner inside interest interior internal learn lesson machine model modern otto photo physics pistons principle school structure study subject teach technology text understand understanding university valve valves verbrennungsmotor view word workings works writing