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In the 17th century, the Dutch physician and anatomist Regnier De Graaf spoke of "liquid as usually comes from the pudenda in one gush". 在17世紀，一個醫(yī)生，也精于解剖，他談到了“一種通常從外生殖器里涌出的液體”。
John Regnier,Bogdan Wilamowski.SPICE Simulation and Analysis through Intemet and Intranet Networks[J].CIRCUITS&DEVICES,1998-05 畢會娟;彭曉源;王行仁.;分布交互仿真的標準化研究[J]