He crushes it, with one hydraulichand, almost unconsciously, like someone swatting a mosquito.
他几乎无意识地用一只液压手将它拍个稀烂，就像拍死一只蚊子一样。
2
Fracture pressure is the key parameter designed for hydraulic fracturing. On the other hand, acidizing pretreatment is one of the measures reducing fracture pressure.
破裂压力是水力压裂设计的关键参数，而酸化预处理是降低破裂压力的措施之一。
3
Tools for working in the hand, pneumatic and hydraulic and with self-contained electric or non-electric motor.