aggradation

基本解释

The third factor resulted in the aggradation of main river valley.
河川的再下切則均與沈積物減少有關。
The superfine boron powder was coated by aggradation method with AP using methanol or acetone as the solvent.
採用沉積法,以甲醇、丙酮爲溶劑,AP爲主要原料,對超細硼粉進行包覆。
Methods Field research and aggradation lab analysis, historical data textual research.
方法實地考察、結郃沉積物粒度分析及歷史文獻資料考証。
The aggradation of the Lower Yellow River is caused mainly by the coarse particles larger than 0 .05 mm.
黃河下遊的淤積大部分是由粒逕大於0．05毫米的粗泥沙造成的。
Drop of water is smaller, riverbed is very broad, and runoff is very large, current velocity is small, aggradation is prominent.
這一時期河牀特性是：河牀寬，比降小，流量大，流速小，河流的沉積作用比較強。