In order to improve the design and the performance of a polymer electrolyte membrane fuel cell (PEMFC),it is necessary to carry out an investigation on the electrical performances of a PEMFC stack.是什么意思_In order to improve the design and the performance of a polymer electrolyte membrane fuel cell (PEMFC),it is necessary to carry out an investigation on the electrical performances of a PEMFC stack.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句