The factors for American suburbanization are many, including technological factor, economic factor, environmental factor, and social factor.
推动美国城市郊区化的动力机制是多方面的，包括技术的、经济的、环境的和社会文化的因素等。
Main factors affecting the scientific literacy of teenagers could be categorized into group factor, individual factor, environmental factor, and the manner of education and learning.
影响青少年科学素养的主要因素可归纳为群体因素、个体因素、环境因素、教育与学习科学途径等四个方面。
The influence factor of concrete carbonation can be divided into material factor, environmental factor and construction factor.
影响混凝土碳化的因素较多，主要是：材料因素、环境因素和施工因素。
The idea of LCA was used to calculate the environmental load of ironmaking process and analyze the effect of every factor. Environmental load was predicted with BP.
利用寿命周期评价的思想，计算了炼铁生产过程中的环境负荷，并分析了各因素对环境负荷的影响，运用神经网络对炼铁生产过程环境负荷进行了预测。
The idea of LCA was used to calculate the environmental load of ironmaking process and analyze the effect of every factor. Environmental load was predicted with BP.
利用寿命周期评价的思想，计算了炼铁生产过程中的环境负荷，并分析了各因素对环境负荷的影响，运用神经网络对炼铁生产过程环境负荷进行了预测。
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