获得精确的位置信息的同时不依赖于光斑强度、形状、对称性或尺寸。
Accurate position information is obtained independent of the light spot intensity profile, symmetry or size.
信息的非对称性导致消费者在购物时要进行搜寻。
Information dissymmetry cause consumer to search in the course of shopping.
二是信息的不对称性；
股票价格波动对于市场信息的反应过程具有非对称性。
Stock price fluctuation impacts the response of the stock information asymmetrically.
股票价格波动对于市场信息的反应过程具有非对称性。
Stock price fluctuation impacts the response of the stock information asymmetrically.
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