n.加積(淤高；浚填)

The superfine boron powder was coated by aggradation method with AP using methanol or acetone as the solvent. 采用沉積法,以甲醇、丙酮為溶劑,AP為主要原料,對超細(xì)硼粉進(jìn)行包覆。

Methods Field research and aggradation lab analysis, historical data textual research. 方法實(shí)地考察、結(jié)合沉積物粒度分析及歷史文獻(xiàn)資料考證。

The aggradation of the Lower Yellow River is caused mainly by the coarse particles larger than 0 .05 mm. 黃河下游的淤積大部分是由粒徑大于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. 這一時期河床特性是：河床寬，比降小，流量大，流速小，河流的沉積作用比較強(qiáng)。

The aggradation decreased the transportation ability of main stream, that in turn lead to the development of alluvial fans. 至于各項(xiàng)因素的相對重要性，有待進(jìn)一步研究。

adj.加積的(淤高的；浚填的)