碘化银膜的厚度主要由碘化的浓度和时间来控制。
The thickness of the silver iodide film is controlled by the concentration of the iodine and the reaction time.
几十年来，莫斯科的五月节游行都是在晴朗的蓝天下举行的，他们飞机上撒下干冰、碘化银和水泥粉来驱散云层。
For decades, MayDay parades in Moscow have taken place under clear blue skies, aircraft having deposited dry ice, silver iodide and cement powder to disperse clouds.
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