Rate ground of subsidence 地表下沉速度
Experts say it is still too early to know if the canal's water deliveries will help recharge the aquifer and slow Beijing's rate of subsidence.
专家表示，想要知道南水北调能否帮助充盈含水层并减慢北京下沉的速度还为时尚早。
The variation rate of subsidence will become a negative value when the groundwater causes the rebound of foundation, in addition, the cumulative subsidence will decrease.
地下水回升引起地基回弹，沉降变化速率为负值，累计沉降量减少。
However its present accumulation rate surpasses its subsidence rate, resulting in the accumulation of more lime-sand islets.
由于现代珊瑚礁的堆积速率大于地壳沉降速率，可能会形成更多的灰沙洲或灰沙岛。
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