George WrightBBC News
Nevertheless, by 1905, a report on the seaweed industries in Japan noted the “very important use [of pure-grade agar] as a culture medium in bacteriological work.” It’s safe to say that, around the turn of the 20th century, agar had moved from an inconspicuous kitchen jelly to an indispensable scientific substance.，更多细节参见WPS下载最新地址
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讲述人：中国人民银行丽水市分行副行长 吴炜玲