氢能的开发和途径氢作为动力燃料最早是用于火箭推进器中的氢氧发动机。因氢首先需变成液氢，很昂贵，无法在工业上推广。但这一障碍并没有削弱氢这种理想能源对人们的吸引力。１９８６年，世界各国近４００名科学家在维也纳召开了“２１世纪最重要的能源”学术讨论会。会... Hydrogen Energy Development and Approaches Hydrogen as a motive fuel is the earliest hydrogen-oxygen engine used in rocket propulsion. Because hydrogen first needs to turn into liquid hydrogen, it is very expensive and can not be promoted in industry. However, this obstacle did not diminish the attractiveness of people as an ideal energy source of hydrogen. In 1986, nearly 400 scientists from all countries in the world held the “Symposium on the Most Important Energy in the 21st Century” in Vienna. meeting...