Based on the mechanics of wave, the expression of water wave propagation velocity under the action of gravity is deduced and the effect of surface tension on small wave is analyzed.
本文根据波动理论推导出在重力作用下波的传播速度表达式，分析了微小波动中表面张力的作用。
In this paper, liquid water on the performance of a PEM fuel cell and mass transport is observed on different electrode relative position under gravity effect by experiment.
通过试验，观察了在重力作用下液态水对PEM燃料电池性能及其内部传质的影响，分析了PEM燃料电池单体电极的不同摆放位置对其性能的影响。
Numerical examples illustrate the effect of soil-structure interaction on the structures, and deformations of a structure compared with rigid body displacement under gravity second order action.
数值算例表明，土-结构动力相互作用对结构的位移产生较大的影响，由此所引起的重力二阶效应可能使结构抗倾覆性能偏于不安全。
This paper presents the experimental results of prototype vibration test of a concrete gravity dam and shows the independent effect of single buttress in the dam under strong excitation.
本文介绍了枫树坝坝体的原型振动实验情况，并指出了坝体振动中明显的单墩效应。
When the escalator is used and a great number of people are on the escalator, the escalator moves down under the effect of the gravity, thereby saving the energy.
使用时，可在扶梯上人数过多的情况下，靠重力下行，节省能源。
When the escalator is used and a great number of people are on the escalator, the escalator moves down under the effect of the gravity, thereby saving the energy.
使用时，可在扶梯上人数过多的情况下，靠重力下行，节省能源。
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