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screw thread pipe | |||
metal bellows | |||
corrugated metal pipe | |||
metallic bellows | |||
metal corrugated | |||
metallic corrugate pipe |
金属波纹 管 : 8 phrases in 5 subjects |
Automobiles | 1 |
Bridge construction | 2 |
Hydroelectric power stations | 1 |
Nautical | 1 |
Technology | 3 |