Extraction of water depends on two properties of the aquifer: porosity and permeability.

水的开采取决于含水层的两个性质：孔隙度和渗透性。

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Three-dimensional fluorescence spectrum and ultraviolet absorption spectrum of Bletilla striata extraction drawn by boiling water were reported.

报道了白芨沸水浸取液的三维荧光光谱和紫外吸收光谱。

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The researchers used water and an ultrasonic extraction process, followed by gas chromatography-mass spectrometry to quantify the amount of cocaine in more than 230 bills collected in 17 cities.

研究人员从17个城市收集到230张纸币样本，并使用水和超声波提取方法，再加上气相色谱分析-质谱法对样本进行测试。

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Still, the MIT report points out that shale-gas extraction uses less water than other industries, and indeed than other sources of energy.

ECONOMIST: Shale gas��s poor image in Europe is largely unjustified

He said based on projections allowing for increased settlement, water extraction and rising sea levels, the barrier was built to withstand a one-in-1, 000-year North Sea surge occurring by 2030.

BBC: Thames Barrier engineer says second defence needed

Unlike the normal gas extraction, chemically treated water is forced upon the rock underground to fracture it releasing the gas in the process.

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