A method of studying the characters was proposed by the piecewise process and the polytropic exponent based on ideal gas polytropic equation adapted generally at present.
针对目前普遍采用的理想气体多变方程，提出分段处理多变指数的研究方法。
2
Single exponent smoothness model fully embodies the characters of trend and cycle of the continuous varying power load, but it can not think about the effect of the weather elements carefully.