价格波动率
the wave rate of steel price
价格波动源模型
models of stock price fluctuation
价格波动周期
the circle of price fluctuation
原油价格波动
crude oil price fluctuation
等价弹性波动方程
equivalent elastic wave equation
等价二阶弹性波动方程
equivalent second-order elastic wave equation
电价波动
electricity price fluctuation
fluctuating electricity prices