It is difficult to know exactly when the shift from gelatine to agar occurred. As often happens for scientific breakthroughs, agar was likely adopted incrementally alongside the use of other growth media. In 1913, for example, the first diagnosis of Serratia marcescens as a human pathogen was made by growing it on agar as well as on potatoes.
从产业趋势看：租赁只是过渡，不是终局站在更宏观的角度看，机器人租赁的出现，是技术成本下降与市场认知上升之间的过渡形态。，更多细节参见WPS下载最新地址
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