That is what your trend Indicator is for - to keep you with the trend of the market, and when it changes, you must change and reverse your position accordingly.
更确切地说，你要一直坚持跟随市场的趋势，当它变化时，你必须因此改变角色。
2
In the estimation of ore body's grade, it is important for founding correctly power indicator of the reverse K square distance method.