3系列挖掘機：尺寸與應(yīng)用指南 3 Series Excavators: Size and Applicati…

20噸級：適合中小型施工項目，操作靈活，運輸方便。20-ton class: Suitable for medium to small construction projects, offering flexible operation and easy transportation.35噸級：適合大型施工項目，具有更強的挖掘和起重能力。