rainwash
n. 雨水的冲刷;被雨冲走的东西
例句
Obviously, borrowed soil sprayed on slope surface tends to slide or collapse under actions of rainwash, seepage, gravitational force, earthquake, etc.
显然,由于雨水冲刷、渗流、重力、地震等因素的影响,被喷播到边坡坡面上的客土存在力学稳定性问题。