primary distribution system

Primary realization of DAS ( distribution automation system) in the 10 kV overhead distribution lines

10kV架空线配电自动化系统的初步实施

The article primary introduces composing of HT-7 Neutral Beam Injection ( NBI) system, then mainly analyzes gas target thickness, that is pressure distribution of neutralizer gas cell, one of factors which affect heating efficiency of NBI.

本文首先介绍了HT-7中性束注入（NBI）加热系统的组成，然后对影响中性束注入加热效率因素之一的气体靶厚度即中性化室的压力分布进行了重点分析。

Keep to the system in which distribution according to work is primary and a variety of modes of distribution coexist

坚持按劳分配为主体、多种分配方针并存的

Urban primary index has been widely used into the study in the field of philosophy of urban geography for many years, which shows the emphasis on the study on urban distribution system in a country.

长期以来，城市首位度概念被广泛应用于城市地理学的研究中，用来分析一个国家的城市规模分布的规律。