项目组合管理涉及关于计划的有效的、及时的且连续的投资决策，这建立了企业业务策略的目标及目标组件。
Portfolio management is concerned with effective, timely, and continuing investment decisions about initiatives; which enable goals and goals components of the enterprise business strategy.
项目组合管理牵涉到关于计划的有效、及时及连续的投资决策，这些计划建立了企业业务策略的目标及目标组件。
Portfolio management is concerned with effective, timely, and continuing investment decisions about initiatives that enable goals and goals components of the enterprise business strategy.
在其风险与收益的控制方面，应运用数学方法研究股票投资组合的内涵，以便制定出正确的股票投资组合的策略。
Based on mathematical methods, the article explores the risk and profit of stock portfolio and analyzes the strategies and methods of stock investment portfolio.
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