方法：抽取每位投照技师一定数量照片，遮盖投照日期、X线号等可辨认标志，集体阅片对每张胶片图像质量进行评比打分。
Methods: we select each technician's X-ray film works at random, shielding the date, the number and other signals that help to identify, then assess collectively.
驾驶员必须能辨认交通标志。
此外，在灰尘中我们依稀可以辨认出一块X市级文物的标志。
Besides, in the dust we can vaguely read a sign stating that the site was once deemed a municipal culture relic.
应用推荐