Most trace elements, including manganese and arsenic, get into the water through the natural process of rock weathering.
大部分微量元素，包括锰和砷，通过自然过程中的岩石风化作用进入水体。
To study the rule of change of rock chemical composition in the weathering process is very important for further research of weathering mechanism and change in rock's physics mechanics character.
研究岩石风化过程中岩石化学成分的变化规律，对于进一步研究岩石的风化机理以及岩石的物理力学性质变化过程有着十分重要的意义。
Weathering of rock is essentially a static process.
岩石的风化作用基本上是一种静力作用。
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