The filtering flow rules and water-oil displacement characteristics in deep pay and low-permeability reservoirs has some specialities.

深层低渗透率油藏的渗流规律及水驱油特性具有特殊性。

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However, most of undeveloped new blocks are low-grade reservoirs with many development difficulties such as super heavy oil, low permeability, thin bed and deep pay.

而尚未开发的新区大多属于超稠油、低渗、薄层或深层等开采难度较大的低品位油藏。

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For weeks,President Obama has maintained that his record-breaking $3.6-trillion budget for the next fiscal year makes vital investments in energy,health care,and education that will pay dividends once the nation emerges from a deep economic recession.

VOA: standard.2009.03.22

Although not based on deep research, executive pay at this level is would be a serious concern.

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As our clients get ready for the 2011 and 2012 Say on Pay disclosures, I wonder how realistic it is to think that shareholders will have the resources to take a deep dive into the pay programs of the companies in which they have invested.

FORBES: The Realities of Say on Pay: Proxy Season 2011

But it also served to highlight deep-rooted differentials in pay.

ECONOMIST: The DaimlerChrysler emulsion