性价比是商品的性能值与价格值比，是反映物品的可买程度的一种量化的计量方式。性价比全称是性能价格比，是一个性能与价格之间的比例关系，具体公式：性价比=性能/价格。
Cost-effectiveness is the ratio of the performance value of a commodity to its price value. It is a quantitative measurement method that reflects the degree of purchase of an item. The full name of cost-effectiveness is performance-price ratio, which is a proportional relationship between performance and price. The specific formula is: cost-effectiveness = performance/price.
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