Reduction of interfacial tension can increase capillary number, accordingly, reduce saturation of irreducible oil, enhance ability of oil recovery.

界面张力的降低可提高毛管数，从而使残余油饱和度下降，提高原油采收能力。

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Kindle Fire HD starts with excellent resolution, but that is only the beginning-Amazon also added customized features that reduce glare and improve color saturation at any viewing angle.

ENGADGET: Kindle Paperwhite and two Fires up for pre-order in Japan, Kindle Store opens there tomorrow