m****g
发帖数: 3975 | 2 洋人给了迅速回答
BobN
Thu Aug 05 2010, 01:08 pm Report Quote
Registered Member #501
Joined: Mon Aug 02 2004, 03:48 pm
Location: Ewing, New Jersey
Posts: 371
In a river, water movement can be both lateral (usually downstream,
except in eddies) and vertical within the water column. Oftentimes the
strongest up and down movements of water are found on eddylines, other
places would be in hydraulics (holes). A whirlpool is a good example of
downward moving water while a boil is an example of upwa |
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