Furthermore, a double-hulled tanker does not need longitudinal bulkheads for longitudinal strength, as the inner hull already provides this.

此外，双壳油轮并不需要纵向强度纵向舱壁，作为内部船体已经提供了这种。

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The inner hull of wave shape is an important component in small oil burning boiler, and its quality has immediate influence on good running to the boiler.

波形炉胆是小型卧式锅壳式燃油燃气锅炉的重要部件，它的质量直接影响着锅炉的正常运行。

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There are many disadvantages for adopting the press forming techniques of mold to manufacture the inner hull of wave shape, so we are difficult to ensure its manufacturing quality.

采用模型压制成形工艺制造波形炉胆存在诸多缺点，难以保证其制造质量。

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Such an explanation would perhaps be easier to believe, were it not for the fact that the Kursk is the largest submarine in the world, and, unlike any Western submarine, has a twin-hull, the inner skin of which alone is 40cm thick.

BBC: Aftermath of the Kursk tragedy

But they also warned inner city areas of London, Nottingham, Hull and Manchester, which commonly had young populations with unhealthy habits and high levels of single-parent families, were likely to face serious problems in the future.

BBC: NEWS | Health | Health warning for inner cities