The motivation for the research and development of fuel cells is mainly related to their potentially light weight, low volume, and high efficiency of energy conversion, etc.
燃料电池研究与开发的原因主要在于其质量轻、体积小、能量转换效率高等。
The effects of the velocity distribution uniformity on conversion efficiency and durability and pressure loss on engine power and fuel economy have been discussed.
讨论了流速分布均匀性对催化转化器转化效率和载体寿命的影响；压力损失对发动机动力性、经济性的影响。
The system produces fuel on demand in real-time operation and sets up an integrated environment of optimum parameters so that a water-to-fuel conversion process works at high efficiency.
燃油系统产生的时间上的需求，实际操作和设置一个集成环境的最佳参数，使水到燃料转换过程的效率高的作品。
The measured solar-to-fuel energy conversion efficiency — defined as the heating value of the fuel produced divided by the solar radiative power input — reached 0.8 per cent.
测量的太阳能与燃料转换效率（产生的燃料加热值与太阳辐射输入功率之比）达到 0.8%。
The measured solar-to-fuel energy conversion efficiency — defined as the heating value of the fuel produced divided by the solar radiative power input — reached 0.8 per cent.
测量的太阳能与燃料转换效率（产生的燃料加热值与太阳辐射输入功率之比）达到 0.8%。
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