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Products > create > Changsha Fanli Edusupports Co.,Limited | Similar Products
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Mechanices

Mechanices
create a vacuum in the tube, and the tube is inverted, the coin and feather in the tube will fall at the same rate because there is nothing causing resistance anymore in the tube. Very occasionally ...

Measuring Tools for General Science in Middle Schools

Measuring Tools for General Science in Middle Schools
creates a series of sparks which burns tiny dots into the paper tape at a precise and same interval when the tape is pulled through the Spark Timer. The faster the tape is pulled through the timer, ...
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