Considering the friction of borehole wall against water moving with high speed, a physical model of waterstemming movement in water blasting is set up in this paper.
本文计及水在高速运动时与壁面的摩擦阻力，建立了水封爆破水塞运动的物理模型。
2
Uncertainties in the future rate of (temperature) rise, stemming largely from the 'feedback' effects on water vapour and clouds, are topics of current research.
未来（温度）上升率的不确定性很大程度上由水汽和云层‘反馈’效果造成，这些是当前研究的课题。
3
Its activities would be funded in large part by Clean Water act penalties stemming from the BP spill in 2010, the biggest in the nation's history.