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类型：纪录片 地区：加拿大 年份：2011

主演：内详  

导演：内详  

更新：2024-10-25 13:53:31

简介： Dan furnaces of different materials and qualities have different heat transfer properties. The resulting optimum temperature for extraction is also different. Dan furnaces No. 1 to 5 are the same, but Dan furnace No. 6 is different... 详情