更多nivation例句

1. Thus far only those volcanoes have been considered which have been modified by nivation.
2. The process of nivation, or snow erosion, does not always produce visible effects.
3. He has adequately shown the manner in which that phase of nivation is expressed which we find at the border of the snow.
4. It would at first sight appear impossible to distinguish between these changes through the results of nivation.