MACD柱计算短期和长期均线之间的距离，然后用柱状图表示。
MACD-Histogram measures the spread between short-term and long-term moving averages and plots it as a histogram .
短期组均线已经分离，并运行至长期组均线以下。
The short term group of averages has separated and moved below the long term group of averages .
长期均线