17These rings are indicative from the crystal structure of nickel and might be discussed only by invoking wavelike properties of sunshine.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液�