thin-wall-centrifugal-concrete-steel-tube-tower

['θɪnw'ɔːlsentrɪfj'ʊɡlk'ɒnkriːtst'iːltj'uːbt'aʊər]     ['θɪnw'ɔːlsentrɪfj'ʊɡlk'ɒnkriːtst'iːltj'uːbt'aʊər]    
  • 薄壁离心砼钢管塔

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