俄罗斯科学专家最近发明了以普通水充当冷却剂和润滑油的汽车发动机,这项成果有望大大减轻行驶的汽车对环境的污染。水与一种铝合金接触后,显示出冷却和润滑的性能。基于这一发现,研究人员研制出新型的汽车用内燃发动机,这种发动机利用普通水充当冷却剂和润滑剂。新型发动机汽缸中的活塞环完全用铝合金制成,而不是按 Russian scientific experts recently invented a car engine that uses ordinary water as a coolant and lubricating oil, and this result is expected to greatly reduce the environmental pollution of vehicles traveling. After contact with an aluminum alloy, water shows cooling and lubricity. Based on this discovery, researchers developed a new type of internal combustion engine for automobiles that uses ordinary water as a coolant and lubricant. The piston ring in the new engine cylinder is made entirely of aluminum alloy instead of pressing