1)Circular,通函，传单2)through transfer function,直通传递函数3)a circular letter,传阅文件;通知, 通函4)single channel per carrier transmission,单通载波传输5)circular,通告;传单;圆形的6)luminance transfer function matrix,光通传递函数矩阵
用法例句
An illuminance ratio model based on a luminance transfer function matrix;