阶梯楔块校准底片: step-wadge calibration filmstep-wadgecalibrationfilmstwadge calibration film
照相: 1.(拍照) take a picture; take pictures; take photographs; take photos; photographing base; photograph; shoot; photography 短语和例子缩微照相 microphotograph; 我给你照张相好吗? may i take your picture? 我们在一起照