| 摘要 |
PURPOSE: An inner capacity adjustable cup is provided to be adjusted by injecting or discharging air. CONSTITUTION: An inner capacity adjustable cup comprises: a main body(100) which is made of plastic; an air supply nozzle(140) and an air outlet(150) which is located in the lower part of the main body of the cup; and a transparent pad layer(130) which is located in the inner part of the main body of the cup and is expanded according to the inside air pressure. |
