규칙이나 법, 권위에 의해 허가되거나 용인된.
Permitted or authorized by rules, laws, or authority.
예문:
"Smoking is not allowed inside the building."
"The allowed weight for carry-on luggage is seven kilograms."
양자 역학의 선택 규칙에 따라 에너지 준위 간의 전이가 허락된.
Describing a transition between energy levels that is permitted by selection rules in quantum mechanics.
예문:
"The spectrum shows several allowed transitions between the energy states."
"An allowed energy level is one that an electron can occupy within an atom."