German luxury carmaker bmw unveiled the world ' s fastest hydrogen - powered car at the paris auto show , dubbed the h2r , capable of exceeding 300 kilometers ( 185 miles ) per hour 德国宝马汽车公司在巴黎的车展上展出了世界上最快的氢燃料内燃动力汽车。创下记录的h2r轿车最高时速为每小时185英里。
The flow fields of two - dimension for fuel - air equivalence ratio = 0 . 35 are respectively calculated . comparisons made with experimental data obtained at similar ( but not identical ) flow conditions were encouraging 得到了油气当量比= 0 . 35的氢燃料超燃冲压发动机燃烧室流场的精细结构。
A dynamical model of h2 fuel cell stack with water balance is developed in this paper for studying steady and dynamical performances of proton exchange membrane ( pem ) fuel cell stacks 摘要提出和建立了包含水平衡的氢燃料电池堆的动态模型，用于研究质子交换膜( pem )燃料电池堆的静、动态性能。
First , hydrogen - air scramjet combustor is numerically simulated and analyzed by solving the general one - dimensional unsteady euler equation . second , compressible , reacting , turbulent flow solutions are obtained 通过求解广义一维非定常euler方程，数值模拟了氢燃料的燃烧室，并和实验结果进行了比较和分析。
Nylon pressure control nairongji , chief hydrocarbon fuels for vacuum , air - conditioning , vibration insulation , in - 40 degrees ~ 120 environment for long - term use of non - fracture normal phenomenon 尼龙压力管耐溶剂、耐碳氢燃料，用于真空、空调制冷、振动绝缘等，在- 40度~ 120度环境中正常长期使用无断裂现象。
One experimental clean - energy car runs on natural gas . another uses ethanol distilled from corn . a third has a zero - emissions electric motor powered by a hydrogen fuel cell 一辆尚处于实验阶段的清洁能源汽车依靠天然气行驶。另一辆使用从谷物蒸馏而来的酒精。第三辆则装有由氢燃料电池提供能量的零排放发动机。
In the second chapter , firstly , based on the analysis of theoretic cycle of hydrogen engine , the relations between state parameters in four strokes are established 以氢燃料发动机的理论循环为基础，进行了各工作过程状态参数的计算分析，得出了描述理论循环动力性和经济性，即平均指示压力和热效率的表达式。
D . because the surge of nuclear fusion would expand the sun ' s core , the outer layers surrounding the core would be compressed , igniting nuclear fusion in the outer layers and destroying our star in a comprehensive thermonuclear explosion 太阳会变成一个更大、更热、更明亮的主序星并且会保持这种状态直到核心的氢燃料用尽为止。
The comparative analysis shows that the hydrogen fueled engine can use clean and renewable energy and fully utilize well - established industrial infrastructure , so is a practical way to realize hydrogen economy 通过对比分析指出氢燃料内燃机既可以采用清洁可再生能源，又可以充分利用现有的庞大工业体系，是实现氢气经济的现实途径。
Global one - dimensional finite volume euler equations coupled with chemical reactions are implicitly solved to simulate the reacting flowfield of the combustor of scramjet fueled by hydrogen or hydrocarbon 本文采用隐式格式强耦合求解有限体积法离散的考虑化学反应的广义一维euler方程，数值模拟氢或碳氢燃料超燃冲压发动机燃烧室的化学反应流场。
