常見(jiàn)例句For some sediments and flow the flat bed does not occur and the bed form goes directly from dunes to antidunes. 對(duì)某些泥沙和水流，平整床面并不發(fā)生，而床面形狀則直接從沙壟轉(zhuǎn)為逆行沙壟。The presence of dunes or antidunes in streams alternately decreases and increases the local depth. 河流中沙壟和逆行沙壟的存在，使局部水深交替地增大或減For some sediments and flow the flat bed does not occur and the bed form goes directly from dunes to antidunes 對(duì)某些泥沙和水流，平整床面并不發(fā)生，而床面形狀則直接從沙壟轉(zhuǎn)為逆行沙壟。 返回 antidunes