return and risk of security
return and risk of security
回报和安全风险
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Second part, we designed the method of measuring investment return and risk on the basis of definitude of the essence of security investment return and risk.
第二部分，在明确了证券投资收益和风险本质的基础上，设计了证券投资收益和风险的计量方法。
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