The paper points out that the environment of rural industry system mainly included systems, market and economic conditions.
论文指出农村工业系统环境系统的主要组成要素为制度、市场和其他经济条件。
They are used in metallurgy mining conveyor systems environment protecting and other industry.
该种轴承座主要应用于冶金，矿山，输送系统，环保设备等等。
They are used in metallurgy, mining, conveyor systems, environment protecting and other industry.
该种轴承座主要应用于冶金，矿山，输送系统，环保设备等等。
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