A planar model of air and water flow on metal fill surface was set up to investigate heat and mass transfer performance of air conditioner.

建立了填料塔的二维传热传质模型，考虑了因水蒸发或凝结而引起的水的质量变化和空气的质量变化。

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Numerous opportunities surface for existing employees to fill these newly created roles, however one must consider how the baseline work will be maintained.

FORBES: Manage Major Business Transformations In Stages

Tablets lack the functionality of a full computer and leave many holes holes that I think a hybrid device like the Microsoft Surface will be able to fill.

FORBES: Tablets Are So Last Year

They clear and fill the holes, then use a roller or whacker to smooth the surface.

BBC: Jetpatchers at work