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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.
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“最直观的就是用车成本，尤其是在家装了充电桩，每公里成本不到1毛钱，春节走亲访友、周边自驾游，电费也不过百十来块钱，比油车省太多了。” 除此之外，空间、动力，智能驾驶等，也都让阿武对自己的爱车爱不释手。