巨大的建筑能耗产生的能源问题和环境问题是当今建筑界面临的重大问题和挑战。
Energy and environment issue caused by enormous building energy consumption is the largest problem and challenge faced by construction sector.
能源问题是当今世界重大问题之一。
能源危机是当今世界迫于解决的问题，相变储热技术对于能源的合理配置意义重大。
Nowadays, energy crisis is a world problem which has to solve. The technology of phase change for heat storage is signality for energy source allocation.
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