释义 |
Sprague AHD[sprāg] Frank Julian (1857-1934) D.J.[spreɪg]K.K.[spreg]NONE(无词性)- American engineer and inventor. He developed the first electric trolley system (1887) and made advances in electric elevator design.斯普雷格,弗兰克·朱利安:(1857-1934) 美国工程师和发明家。他发展了第一部电力机车系统(1887年),并在电梯设计上作了改进
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