The stretch method could lower the environmental pollution, save the energy, improve the production efficiency and the performance of the lead-acid battery.
切拉网法可以降低对环境的污染，节省能源，提高生产效率和铅酸电池的性能。
This paper states the method of selecting and using circulating pump in hot water heating system properly to save electric energy.
合理的选择和使用热水供暖系统循环水泵，以达到节约电能的目的。
The research and development of energy saving process equipments is an important method to save energy nowadays.
高效节能过程装备的研究开发是当今工程节能的重要手段。
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