Under modern conditions, this requires varying measures of centralized control and hence the help of specialized scientists such as economists and operational research experts.
Under modern conditions, this requires varying measures of centralized control and hence the help of specialized scientists such as economists and operational research experts.
在现代条件下，这需要不同程度的中央控制措施，从而就需要获得诸如经济学和运筹学等领域专家的协助。