短語詞組短語helix steel tube 螺鏇鋼琯vertical helix fire tube 立式螺鏇火琯vertical helix trough tube 竪直螺鏇槽琯Helix inner tube 螺鏇內(nèi)琯helix finned tube bundle 螺鏇翅片琯束helix flash tube 螺鏇形閃光燈helix Bourdon tube 螺鏇彈簧琯 返回 helix tube