The films have advantages of slightly compressive stress, very low pin-hole density and superior step coverage.

这种薄膜具有很小的压应力，很低的针孔密度，良好的台阶覆盖性等优点。

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Using the method of heat-mass transfer analogy, experimental research was carried on to investigate adiabatic film effectiveness of inclined multi-hole full-coverage film cooling.

采用传热传质类比的方法，对多斜孔壁气膜冷却的绝热温比进行了实验研究。

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An argument can be made that since the donut hole in pharmaceutical coverage for seniors is not completely filled until 2020, Medicare Advantage is still of considerable importance to our seniors.

FORBES: Does Obamacare really cut Medicare Benefits to Senior Citizens?

The nation's top drug manufacturers agreed over the weekend to at least a 50 percent discount for most beneficiaries for brand-name medicines purchased in the so-called "doughnut hole" gap in coverage, Obama noted.

CNN: Obama praises drug industry deal to cut costs for elderly

They are prey for the unscrupulous--from those peddling nonexistent coverage to pharmaceutical firms that offer cash or in-kind drug assistance specifically to lure old people to a particular plan or help push them out of the doughnut hole and into catastrophic coverage, so that Medicare picks up almost the whole tab.

FORBES: The Black Hole