ćșéĄ:Kelvin.ăă
()
ăăăäžæ„ăçČăăćăăȘăăȘăăäœăăăŁăïŒ
è©łçŽ°ăăŒăž(13)ćæ„ćă«ăăŻăĄăăăšäžæ„ăăŒăăă
ă©ăăčăăăăźăă±ă§ăăćæ„ćă«ăăŻăĄăăăšäžæ„ăăŒăăă
ă©ăăčăăăăźăă±ă§ăă