Stacking occurs when a series of short draws of hot water (3 gallons or less) are taken from the water heater tank.

当从热水器内取出一系列少量热水(3加仑以下)时，会发生层积现象。

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While the city is having lack of green spaces, this modular skyscraper is envisioned as a series of solar powered stacking units containing green gardens and additional space for living and working.

虽然城市是有缺乏绿地，这种模块化的摩天大楼的设想一系列太阳能堆积单位含绿色花园和额外的空间生活和工作。

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