Water level gradient is an important environmental gradient in wetland, the research of reaction of wetland plant to water level gradient is an important content of wetland ecology.
湿地中，水位梯度是一个重要的环境梯度，湿地植物沿水位梯度式样反应的研究是湿地生态学重要的研究内容之一。
Water potential reflects energy level of soil water and the gradient of water potential is an impotent factor describing direction and velocity of water flow.
水势反映土壤水的能态，而水势梯度则是决定水流方向和速度的重要因素。
Due to groundwater pumping the water level is lowered, the buoyancy in covering soil is decreased, the hydraulic gradient and flow velocity are increased, and the corrosion is enhanced.
抽汲地下水降低了地下水位，使上覆土层浮托力减小，水力坡度和流速增大，潜蚀作用加强。
On the basis of the analysis of factors affecting the river water level, the BP neural network model, based on the gradient descending algorithm, is used to calculate the river water level.
在分析影响河道水位因素的基础上，采用基于梯度下降算法的BP神经网络模型推算河道水位，同时采用传统的上下游水位线性相关方法进行水位推算。
Increasing of water and decreasing of gradient of channels, the flood water level rose abnormally in some local sections of river.
来水量增多而河道比降变小，造成局部洪峰水位异常壅高。
Compared with the old-fashioned, the new sensor has a new internal structure and data processing algorithms, it can be able to measure ice thickness, water level values, the ice temperature gradient.
与老式的冰层厚度传感器相比，新研制的冰层厚度-冰温传感器具有新的内部结构以及数据处理的算法，能够对冰层厚度、水位值、冰层内部的温度梯度进行准确测量。
Ultrasonic liquid level gauge used to real-time measure the upper level and tail level of the two sections , then the computer calculated average water level, gradient of water table and discharge;
用超声波液位计将测流渠段的上下游两断面水位实时测出，再用计算机分时段算出平均水位、水面坡降及流量；
Ultrasonic liquid level gauge used to real-time measure the upper level and tail level of the two sections , then the computer calculated average water level, gradient of water table and discharge;
用超声波液位计将测流渠段的上下游两断面水位实时测出，再用计算机分时段算出平均水位、水面坡降及流量；
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