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bolting | |||
rock bolt support | |||
anchorage; anchor bolt support; bolt support; rock anchorage; rock bolting; rock bolting support; rock-bolt support; suspension roof support |
锚 杆 支护 : 16 phrases in 4 subjects |
Architecture | 1 |
Engineering geology | 3 |
Hydroelectric power stations | 1 |
Technology | 11 |