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air pressure
Group member 1E CHONG KWONG YU 1E FU SHU YU 1E KONG MAN HONG
- from: s100385
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air pressure
Today, we will show a video about air pressure. First,we prepare a cup,some water and a piece of paper. Next,we put a paper on top of the cup. Than,we turn down the cup immediately. Finally,the pap...
- from: s100385
- Hits: 141
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