How experiment
1. Use the beaker measure water bottle at a time until a full bottle 500 water mark shows the water every time water
2.? Hand mouth bottle inverted bottle mouth into the basin with water contained
3.Put the tube one side into a bottle, on the other side, put in a mouth breathing normally, then relax breath heart out through the mouth through the tube. Read the water volume is the air instead of recording the
4.Breathe hard, then slowly breath out fully from the mouth through the tube along the way in an 3 record
.
การแปล กรุณารอสักครู่..