The features of double walled cylindrical explosion containment vessels closed with flat heads are presented.

本文介绍了平封头的圆柱形双层爆炸容器的设计特点。

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There was a burst of shouting from across the street, and the doors of a dark-shingled flat-roofed building opened, letting loose several men, who were jamming caps on their heads and banging lunch buckets against their thighs.

NEWYORKER: Amundsen

Other spending heads will face the same squeeze as all those public sector workers if their cash allocation flat-lines - 4 to 5% this year, maybe down below 3% next year, but still requiring a deeper real terms cut than officially recognised by the 2.9% inflation rate currently assumed by the Office of Budget Responsibility.

BBC: Budget challenge