'Willis Carrier found a way to control humidity & temperature & created the modern type of this machine'
an air conditioner
INVENTED IN THE 20th CENTURY: Willis Carrier found a way to control humidity & temperature & created the modern type of this machine
Willis Carrier found a way to control humidity & temperature & created the modern type of this machine
Willis Carrier found a way to control humidity & temperature & created the modern type of this machine
INVENTED IN THE 20th CENTURY
an air conditioner
INVENTED IN THE 20th CENTURY