關鍵字詞：滑輪組 | 設計與科技 | Design & Technology | 物料和結構 | Materials & Structures | 結構及機械結構 | 設計與科技教育 | Design & Technology Education | Structures & Mechanisms | 齒輪 | Pulley System | Gear | 帶動帶 | Belt | Worm and Worm Wheel | 錐齒輪 | Bevel Gears | 齒輪齒條 | Rack and Pinion | 鏈及鏈輪 | Chain and Sprockets | 齒輪比 | gear ratio | gear train | compound gear | 蝸杆和蝸輪 | 齒輪組 | 複合齒輪