Kettle for boiling coffee
作者： Terumi Tokai , Yasuji Kawakazo , Takao Kamiba
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lens.org 参考文章(2)
Hideaki Kobayashi, Masahiro Koyama, Hideo Obata, Toshio Nakamura, Motoi Miyoshi, Electric coffee brewer ,(1986)
Hans D. Heyn, Werner Edler, Coffee or tea maker ,(1988)