The paper respectively studies the principles and features for profiling attachment and slider crank mechanism to be used as clamping apparatus to fabricate oval hand hole cover.

分别对凸轮靠模和曲柄滑块机构作为工装加工椭圆手孔盖的原理及特点进行了探讨。

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Cover the hole with the plastic sheet.

用塑料薄片把洞盖上。

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Next, cover the hole with the plastic sheet, and secure the edges of the plastic with dirt.

接下来，用塑料板盖住洞口，并用泥土固定塑料板边缘。

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In New York, the stock market is down, investors are withdrawing assets from his fund, and he has borrowed four hundred million dollars to cover a hole in his balance sheet.

NEWYORKER: Risky Business

Ross Fisher was another to begin from the 10th at Carnoustie and recorded a double bogey at his opening hole, taking 41 to cover his first nine holes.

BBC: Lee Westwood moves into contention at Dunhill Links

The German weekly Der Spiegel has reported that an initial assessment by the inspectors suggested Greece may need to cover a financing hole of up to 14bn euros over the next two years, rather than the 11.5bn Athens has identified for 2013 and 2014.

BBC: Antonis Samaras