- 一(one; horizontal line (barrier))
- 廾(two hands lift up)
Two hands push up the barrier together to open it.
perturbative expansion (physics)
Perturbation expansion is an important method in physics.
perturbative expansion (physics)
Perturbation expansion is an important method in physics.
Two hands push up the barrier together to open it.
Two hands push up the barrier together to open it.
perturbative expansion (physics)
perturbative expansion (physics)
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