Under modem conditions ,this requires varying measures of centralized control and hence the help of specialized scientists such as economists and operational research experts.
Under modem conditions ,this requires varying measures of centralized control and hence the help of specialized scientists such as economists and operational research experts.
在模拟条件下，这要求采用多种中央集权控制的手段，因此也就需要如经济学家、运作分析师等专业科学家的帮助。