求翻译：分散投资引入了对风险和收益对等原则的一个重要的改变，分散投资可以在不降低收益的同时降低风险。这也意味着通过分散投资我们可以改善风险—收益比率。是什么意思？

Diversification of risks and benefits of introducing the principle of reciprocity is an important change, diversification can not reduce the benefits while reducing risk. This also means that we can improve through diversification of investment risk - benefit ratio.

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The disperser investment has introduced to the risk and an income coordinated principle important change, the disperser investment may while not reduce the income to reduce the risk.This also meant invests us through the disperser to be possible to improve the risk - income ratio.

Diversified portfolio introduces an important change of the risks and benefits of the principle of reciprocity, diversification could be made without reducing income while reducing risk. This also means that through a diversified portfolio, we can improve the risk-benefit ratio.

正在翻译，请等待...