燃料电池的工作效率一般在50%左右，对其余热回收利用具有极大的社会经济意义。
The work efficiency of the fuel cell is generally about 50%, so it will have tremendous social economic meaning to its waste heat recovery exploitation.
基于实钻研究，分析空气泡沫钻进技术在地质岩心钻探中应用的技术优势和社会经济意义；
The article analyses the technique superiority and social economic meanings of the air-foam drilling on the basis of the studying to productive experiment.
本文通过南黄海地震等实例试论了地震立法及其社会经济意义；从我国的多震以及所面临的地震活动趋势论述了地震立法工作的迫切性；
The paper makes an attempt to approach seismological legislation and its societal and economic significance by taking the South Yellow Sea earthquake of May 1984 and some others as examples;
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