Working medium inlet and exhaust non-return valves balance hole for Stirling engine is introduced.

对热气机工质进排气单向阀平衡孔作了简介。

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Practices demonstrate that blocking balance hole is a effective method to resolve the axial negative thrust of rotor.

实践证明，堵平衡孔是解决转子轴向负推力问题的一种行之有效的方法。

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All BX gaskets incorporate a pressure balance hole to ensure equalization of pressure that may be trapped in the grooves.

所有BX垫圈均带有一压力平衡孔，以确保垫圈两槽底间隙处的压力上下平衡。

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The issue, which is a little bit more substantial, is whether all this diligent chivvying by Mr Bailey will be deemed by the Bank of England's Financial Policy Committee to be adequately filling the hole in bank's balance sheets - a hole described by Sir Mervyn King in late November as "material" (see my previous pieces here and here).

BBC: Who can boss the banks?

To patch up the hole in its balance sheet the Fed would have to beg Congress or the U.S. Treasury for a bailout.

FORBES: Could A Federal Reserve Bank Go Bust?

That then increases the size of the hole in their balance sheets, and therefore the scale of the official rescue from taxpayers they will eventually require.

BBC: Spain moves nearer to full-scale rescue