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印度2型和3型水泵

8 bytes removed, 00:46, 13 October 2016
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*[http://www.clean-water-for-laymen.com/water-hand-pumps.html像印度2型手动泵一样的手动水泵已存在许多年并在全世界范围内使用。] CleanWaterforLaymen.com
翻译：Amber Ho翻译：A.H, 卫芸芸，邢辉 校对：甘露 校对：L.G UNSW 翻译硕士专业学生
Gladys
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