... The First Category 第一类 first category of goods 一类物资 first category gassy mine 一级瓦斯煤矿 ...
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Organize this category of the mode in electric market structure and trade: Have studied the organization of the northwest electric market goods trade system of area at first.
在电力市场结构和交易组织模式这一范畴：首先研究了西北区域电力市场商品交易体系的组织。
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