重力不断的向下托拽山坡，当重力作用超过岩石、沙子和沉积物的强度，就形成滑坡，并使得地面开始沿着山坡滑落。
Gravity constantly tugs downward on a slope, but only when gravity's force exceeds the strength of the rocks, soils, and sediments composing the slope does land begin to slide down hill.
采砂船上不仅有挖斗，而且还有冲砂和分选设备，以使较重的有用矿粒因重力而沉积。
The dredges not only have scoops but also devices for washing sand or gravel and screening it so that gravity settles the heavier and more valuable particles.
研究了重力取样器的取样技术，并在此基础上成功设计了一种便携式的重力式取样器，非常适合环境研究机构的沉积物取样工作。
On the basis of such research, it also presents a portable gravity corer, which is regarded as a suitable sediment sampling tool for environmental research sectors.
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