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传承千年的采盐术自贡井盐，巧妙的制盐工艺彰显古人的智慧 #盐
探访自贡传统井盐，了解古人从千米深井盐采盐制盐的勤劳与智慧
传统人文科普录52/67
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App01:51探访自贡传统井盐，了解古人从千米深井盐采盐制盐的勤劳与智慧
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