关于Moving Average指标

	在VT里面的这些指标： Moving Average Moving Average Convergence/Divergence (MACD) Moving Average Convergence/Divergence (MACD) - Histogram Moving Average Convergence/Divergence (MACD) - Line Moving Average Envelope Moving Average of RSI Moving Slope Rate of Change 有什么区别啊，麻烦解释一下。谢谢了！