本文为高层筒中筒结构的刚度估计提供了一种简化计算方法。

Simplified method for evaluating the stiffness of a highrise tube-in-tube structure is presented in this paper.

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当然，我在说的正是我那双兼具美妙与智慧、设计巧妙的中筒胶靴。

I speak, of course, of my wonderful, brilliant, intelligently designed, 4 calf-high rubber boots.

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用“筒中筒”方法高速拉制了有孔光纤预制样品，目标是符合下一代通信系统的量产需求。

A holey fiber preform structure was made by using tube-in-tube method and was drawn at high speeds with an aim of mass production to meet the demand of next generation communication systems.

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