superincumbent bed是什么意思

用法例句

The influence of the organic materials and nutrition released from the sediment on the covering water quality of Suzhou creek in Shanghai was studied.

研究了上海市苏州河底泥中有机物及营养盐释放对上复水水质的影响,分析了微生物与底栖生物底泥再悬浮对底泥释放过程的影响。