upstream face

基本解釋

The pier arrangement on spillway crest with sloping upstream face is studied by 310 sets of experiments in the paper.
本文通過310組試驗，研究了上游面傾斜的溢流壩的閘墩布置。
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.
分析了壩體所用混凝土骨料線膨脹系數(shù)不同時對壩踵、上游面、壩體中心部位、壩趾、下游面的溫度應力的影響情況。
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.
據(jù)推論最大可能性是在那一時間段非線性水壓作用于壩體上游面所造成的差別。