Analyzes the input - output condition in different modes of access and ownership at libraries, tries to provide a basis of decision for different mode selections from economical point of view.
分析图书馆拥有模式和存取模式的投入产出情况，试图从经济学的角度为不同模式的选择提供一种思考的依据。
In this way, the 'contact point-sampling-contact point' access mode of the wiring terminal of the primary cable is changed to be the 'sampling-contact point-contact point' mode.
这样，将一次电缆接线端子接入方式由现有的“接点—采样—接点”方式改进为“采样—接点—接点”方式。
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