根据所定义的“综合能源价格”，采用与常规热水器进行定量比较的方法，对影响太阳热水器经济性的主要因素进行了分析。
According to the synthetic energy price defined, analyses the main factors of effecting solar water heaters economics by the method of comparison with corresponding general water heaters.
连接是影响钢结构经济性的一个很重要的因素。
Connection is an important factor that affects economy of steel structure.
因此，它是影响发动机动力性、经济性、耐久性、可靠性以及排放的重要因素。
It is an important factor that affects power, economy, durability, reliability and emission of an engine.
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