短語(yǔ)詞組短語(yǔ)Kelvin circulation theorem 尅耳文環(huán)流定理kelvin n theorem 開耳文定理;開爾文定理Kelvin 's minimum-energy theorem 開爾文最小能量定理Kelvin theorem of circulation 開爾文環(huán)流定理 返回 Kelvin theorem