half tone scale

55???? ... 浓淡特性 half-tone 浓淡标度 half-tone scale 浓淡信号 half-tone signal ...

中间色调，半色调，网点阶调,half... ... ) half-tints,medium tints 中间淡色调 ) half-tone scale 中间色调(网点阶调)等级复> ...