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upper chord; upper chord bar | |||
top chord; top boom; upper chord member | |||
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top chord; principal rafter |
上弦 杆 : 34 phrases in 7 subjects |
Architecture | 3 |
Automobiles | 1 |
Bridge construction | 3 |
Engineering geology | 1 |
General | 1 |
Rail transport | 2 |
Technology | 23 |