The size of bubbles on the trays are determined either by experiment or by analog calculation.

塔板气泡大小或者采用实验测定，或者采用模拟计算。

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The analyzing results show that the requirements of reaching high efficiency degassing hydrogen are as follows:the size of bubbles should be in the order of micron;

分析结果表明，要实现高效节能除氢须满足以下几个条件： 气泡的尺寸尽可能要小；

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It is certainly hard to spot bubbles; but central Banks already grapple with other imponderables, such as the size of the output gap or the level of structural unemployment.

识别经济泡沫开始形成当然有难度，但央行已经有过处理其他不可预知事件的经验，像衡量产出缺口的大小或结构性失业率的水平。

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Mr Mahdavi says his technique could control the size and positioning of the bubbles in such foam, and so determine the material's strength and rigidity.

ECONOMIST: MONITOR

Talk of bubbles popping in economies the size of China makes investors nervous.

FORBES: No Meltdown As China Banks 'Healthy', IMF Says

Once over the top of a high dune, you come to a hot spring, the size of a large jacuzzi, where sulphurous water bubbles in a pool and runs off to irrigate a garden.

BBC: Siwa: An Egyptian oasis