Infiltration as a important hydraulicprocess was reviewed in terms of theoretical models, influential factors and reduction mechanisms.
作为重要的水文学过程，对渗透从理论模型、影响因素及减少机理角度进行了回顾。
2
By cannoning water, sand and chemicals at them, a process known as hydraulic fracturing, or “fracking”, the bubbles can be released.
用水、沙、化学药物撞击它们的“高压水砂破裂法”能释放出气泡，这个过程也称“水力压裂”。
3
Thanks to new drilling technology, and in particular a controversial process called hydraulic fracturing or "fracking," the size of the proven reserves is growing.