observation n time 观测时间
observation n error 测量误差
observation n of slope stability 边坡稳定性观测
In the continual observation, size-fractionated dissolved organic N and P had similar trend with their inorganic counterparts.
在连续观测中，各形态溶解有机氮、磷的变动趋势与无机态较为接近。
Useing of Dongting Lake hydrological observation stations, environmental monitoring data and on-the-spot investigation, Analysising of the Dongting Lake wetland on the N, P pollution-purification.
利用洞庭湖水文观测站、环境监测站和实地考察资料，分析了洞庭湖湿地对氮（N）、磷（P）污染的净化功能。
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