arch support

短语词组

短语

• arch walling support roadway 砌碹巷道
• arch walling support 碹体支护
• yieldable arch steel support 拱型金属可缩性支架
• Bolt -arch Combined Support 锚碹联合支护
• U -steel arch yieldable support 拱形巷道
• arch support saddle 拱支座
• ball -arch support 球拱
• steel arch support 钢拱支撑
• Htype steel arch support 工钢圆对棚
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