在显影液中某种试剂的作用下,已感光的卤化银可转变成金属银.The exposed silver halide is then converted to metallic silver by an agent in the developer.易感光的胶片.Film that sensitive to light.检测任何致过敏和致感光的潜在活性得到特别重视.A special attention was given to the det...
A perennial is a plant that lives indefinitely.多年生植物是指能存活很多年的植物。the perennial problem of water shortage缺水这个老问题I wonder at her perennial youthfulness.我对她青春常驻感到惊讶....