upstream face

基本解释

The pier arrangement on spillway crest with sloping upstream face is studied by 310 sets of experiments in the paper.
本文通过310组试验，研究了上游面倾斜的溢流坝的闸墩布置。
Changes of thermal stress of dam heel, upstream face, dam center, dam toe, downstream face for the difference of linear expansion coefficient aggregate used in the dam.
分析了坝体所用混凝土骨料线膨胀系数不同时对坝踵、上游面、坝体中心部位、坝趾、下游面的温度应力的影响情况。
It was theorized with a high degree of probability that the change in period was due to the nonlinearity of the hydrodynamic pressure acting on the upstream face of the dam.
据推论最大可能性是在那一时间段非线性水压作用于坝体上游面所造成的差别。