The first reaction unit is set to a temperature higher than that of the second reaction unit, and the first region has a higher reflectivity than that of the second region, with {HEAD ~ respect} to {TAIL ~ a heat ray} that is radiated from the reaction device main body 
The first reaction unit is set to a temperature higher than that of the second reaction unit , and the first region has a higher reflectivity than that of the second region , with { HEAD ~ respect } to { TAIL ~ a heat ray } that is radiated from the reaction device main body
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