1) constant upstream level
上游常水位
1.
Dynamic boundary condition of unsteady flow in open canal with automatic constant upstream level control;
上游常水位自动控制渠道明渠非恒定流动态边界条件
2) downstream constant level
下游常水位
1.
Research of self-adapting canal downstream constant level control based on RBF neural network;
基于RBF人工神经网络的下游常水位自适应渠道输水控制研究
3) water levels of upstream and downstream
上下游水位
4) upper-stage method
上游站水位法
1.
However,this problem can be solved with the upper-stage method and good results have been achieved in practice, which will provide reference for the hydrometric stations in same condition.
用上游站水位法进行中低水流量测验整编很好的解决了这一难题,取得较好的效果,可为具有相同条件下的水文站流量测验整编提供借鉴。
5) hydraulic gradient between upper and lower reaches
上下游水位差
1.
In accordance with the fluctuations of observation data in flood and non-flood seasons,the variation in vertical displacement has obvious relationship to that in hydraulic gradient between upper and lower reaches.
从汛期和非汛期观测数据的波动来看,垂直位移量的变化与上下游水位差的变化有明显关系。
6) the upper reaches of Han River
汉水上游
1.
The wetland in the upper reaches of Han River is a wetland type of north subtropical model.
汉水上游汉中湿地属典型北亚热带湿地类型,由于其特殊地理环境和适宜的气候条件,动植物种类丰富,是野生动物特别是鸟类栖息的场所,也是我国候鸟迁徙的中转、越冬和繁殖地。
补充资料：地下水水位观测(见水位观测)
地下水水位观测(见水位观测)
d ixiashui shuiwei guanee地下水水位观测见水位观测。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条