To obtain high average current electron beams for high average power Free Electron Laser (FEL), a DC-SC photocathode injector is designed.
为获得用于高平均功率自由电子激光（FEL）的高平均流强电子束，设计了一种新型的DC- SC光阴极注入器，并对其进行了优化设计和束流动力学研究。
The report shows that the utilization rate of China's arable land is high, with the current cultivation rate of 13.7 percent, surpassing the world average level.
这份公报指出，中国耕地利用程度高，目前垦殖率已达13.7%，超过世界平均水平。
We think at current levels, one can use these soft prices to make an initial buy on one of our high-quality stock recommendations or to average down into existing holdings.
在现在这个价位，投资者应该抓住低价良机，买入一只我们推荐的优质股，如已持有该股，则再买，以摊低买入成本。
The precept of DC-SC photoinjector is to combine a DC photocathode electron gun and the superconducting cavity together. This scheme is specially adequate to provide the high average beam current.
DC SC超导光阴极注入器将直流光阴极电子枪和超导加速腔结合在一起，其特点之一是适合于提供高平均流强电子束。
The precept of DC-SC photoinjector is to combine a DC photocathode electron gun and the superconducting cavity together. This scheme is specially adequate to provide the high average beam current.
DC SC超导光阴极注入器将直流光阴极电子枪和超导加速腔结合在一起，其特点之一是适合于提供高平均流强电子束。
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