矿井支护 meaning in Chinese

mine support

Mine support ; roof bars single props ; lengths
矿井支护.顶梁单体支柱.长度
Mine support ; head for single props ; connecting dimensions
矿井支护.单支柱用顶板.连接尺寸
Mine support - part 5 : marking of parts of mine support
矿井支护.第5部分:矿井支护零部件标记
Mine support - part 3 : requirements
矿井支护.第3部分:要求
Study on function of reliability degree entropy of support system in mines
矿井支护系统可靠度熵函数研究

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