1 thought on “Why can't the small iron box be opened?”
Ernestine
Several reasons for small iron boxes:
1. One is too tightly twisted, and the lid and iron box bite are very tight. 2. The iron box is rusty and has not been opened for a long time. 3. The pressure from the inside of the iron box and the pressure difference between the outside, and the lid was adsorbed and could not be opened. The skills to open the small iron box cleverly:
. Pour the small iron box and shoot the bottom of the iron box hard; , Give up the cover of the iron box; . Pour the iron box over and place the cover of the iron box in the hot water. The principle of thermal expansion and contraction;
Several reasons for small iron boxes:
1. One is too tightly twisted, and the lid and iron box bite are very tight.
2. The iron box is rusty and has not been opened for a long time.
3. The pressure from the inside of the iron box and the pressure difference between the outside, and the lid was adsorbed and could not be opened.
The skills to open the small iron box cleverly:
. Pour the small iron box and shoot the bottom of the iron box hard; , Give up the cover of the iron box;
. Pour the iron box over and place the cover of the iron box in the hot water. The principle of thermal expansion and contraction;