WIND-ACTUATED MUSICAL INSTRUMENT PUMP

摘要

the invention u043fu043eu0437u0432u043eu043bu00a0u0435u0442 reduce labor input of u0438u0437u0433u043eu0442u043eu0432u043bu0435u043du0438u00a0 pump, increase the duration of service and reliability in operation. this is u043fu043eu0434u043fu0440u0443u0436u0438u043du0435u043du043du044bu0439 u0434u043bu00a0 the front roller. 2).