This paper describes the characterization of superfluid helium briefly and summarizes the using of superfluid helium Dewars refrigerators in space refrigeration.是什么意思_This paper describes the characterization of superfluid helium briefly and summarizes the using of superfluid helium Dewars refrigerators in space refrigeration.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句