单选题S=Ro/R1所表示的是( )。A阻光率B增感率C透光率D放大率E吸收率
单选题
S=Ro/R1所表示的是( )。
A
阻光率
B
增感率
C
透光率
D
放大率
E
吸收率
参考解析
解析:
增感率:指在照片上获得同一密度值1.0时不用增感屏和应用增感屏时的X线量之比,常用S来表示,即S=Ro/R1式中Ro表示不用增感屏时的X线量,R1表示应用增感屏时的X线量。
增感率:指在照片上获得同一密度值1.0时不用增感屏和应用增感屏时的X线量之比,常用S来表示,即S=Ro/R1式中Ro表示不用增感屏时的X线量,R1表示应用增感屏时的X线量。
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