However, when precipitation rate is large enough and soil water goes beyond the field capacity, the excessive soil water will flow laterally to the lower levels through noncapillary pores.
而当降水强度较大，以致使土壤水分大于田间持水量时，超过田间持水量部分的土壤水会很快流往较低的台阶。
2
Formation damage caused by secondary precipitation of ferric ion is a potential problem in acidizing and excessive iron level would bring a series of chain reaction and vicious cycle.