In an unexposed light-sensitive emulsion or coating, the slow chemical change that occurs when the material is stored in an unlighted area.
In an unexposed light-sensitive emulsion or coating, the slow chemical change that occurs when the material is stored in an unlighted area.
中义未曝过光的感光乳剂或涂布在黑暗的环境中会产生缓慢的化学性质改变。