The observation of the morphology of the silver halide crystal surface was limited because of the light sensitivity of silver halide grains.
由于卤化银颗粒有特殊的光敏感性，使得对其表面精细结构的观察受到很大的限制。
The adding of the iodide ions into the subsurface layer of the silver halide crystal could increase the light absorption, sensitivity and contrast of the emulsion.
碘离子掺入到亚表层可增加乳剂的光吸收，提高感光度，增加反差。
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