Natural gas is a high-quality and environment-friendly energy source and fuel, and its percent in primary energy constituent in the world is more and more increasingly.
天然气是一种优质的环保型能源和燃料，它在世界一次能源结构中的比例逐年上升。
The multifunctional air source fresh water generator is environment-friendly, has low noise, saves energy by about 70 percent and is suitable for any environment.
本多功能空气源造水机环保、低噪音、节能70%左右，适合任何环境使用。
This novel heating system uses solar radiation as a heat source, thus it is energy efficient and environment friendly.
该系统是以太阳能作为主要热源的热泵系统，是利用太阳热进行供暖一种非常有效的形式。
The invention saves energy source, keeps nutrient components in foods, is environment-friendly and does not pollute environment.
达到节约能源，保留食物营养成分的目的；
The invention saves energy source, keeps nutrient components in foods, is environment-friendly and does not pollute environment.
达到节约能源，保留食物营养成分的目的；
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