The result of the laboratory analysis of the lacustrine chemical sediment samples from Dongdagou in the Datong Basin shows that the chemical matter is a hydromagnesite.
大同盆地东大沟湖成化学沉积物样品的实验室分析结果表明，该化学物质是水菱镁矿。
Sampling undisturbed lacustrine sediment is a critical job for environmental research. The recovery and undisturbedness of samples ha ve direct effect on the environmental research results.
在湖泊环境研究中， 淤泥质沉积物取样是一项很重要的工作，样品的取心率和原状性直接影响了环境研究的结果。
应用推荐