bathymetric chart,depth chart

Study based on field research and sprout experiment shows ecological effects of base style, illumination depth of water and picking seedling to Potamogeton crispus L.

(3 )水深的增加可显著延长萌发起始时间 ,但不改变休眠芽的最终萌发率。

Calculation of the water depth on a stepped chute spillway based on experimental study;

溢洪道阶梯陡槽段水深试验与计算探讨

Remote sensing of water depth in subsidence area based on artificial neural networks;

基于神经网络的沉陷区水深遥感研究

Computation on streamwise variation of water depth for steady rapidly varied flow in open channel;

明渠恒定急变流水深沿程变化的计算

By analyzing the use of chart, the estimation of the tide and the depth allowance and the management of crew, the paper makes discussions on the measures for preventing grounding of ships.

从海图、潮汐、富余水深及船员管理等方面讨论了预防与避免船舶发生搁浅问

Three math models were given for expressing positions of depth points.

为了分析海道测量中测线对海底地形的表征能力,提出了用于测线探测的参数以及拟合代表误差、方向偏差、平移偏差等测线处理的新概念,给出了表述水深点位置的三种数学模型及它们相互间的转换关系和转换条件,并将最小二乘配置法引入到非定位点水深值的估计中。

This paper combines the hydraulic model and the physical habitat simulation model(PHABSIM) to calculate the instream ecological flow by using the Yellow River carp as target species in Lanzhou to Shizuishan reach of the Yellow River mainstream and taking water depth and velocity into consideration.

结合物理栖息地模拟模型的水力学与栖息地模型,以黄河干流兰州-石嘴山河段为研究样区及该河段的关键鱼种黄河鲤鱼为对象物种,以流速及水深二水力学因子进行研究,推求该研究样区兰州、安宁渡、下河沿、青铜峡和石嘴山五断面对象物种的流量与权重可使用面积的关系。

Based upon study of the gas flowrate changes of filler under various filling rates,submersion depth,microporous and single orifice aeration ways,different aeration density and other conditions the hydraulics characteristics of HSL aerobic biological fluidized bed is studied,which provide good references for optimization design of HSL aerobic biological fluidized bed and similar reactors.

通过研究HSL好氧生物流化床在不同填料填装率、不同曝气水深、微孔曝气与单孔曝气两种不同的曝气方式、不同曝气密度等条件下的填料流气量,揭示了其水力学特性,从而为优化HSL好氧流化床及类似的反应器水力学流态提供有益的参考。