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天津工程机械研究院特种工程机械厂新研制的GC65-4型挖沟机是一种高效的土方作业机械，适用于水利建设、农田基础设施、通信光缆及供气、供水等各种沟渠的挖掘。它能挖掘各种级别的土壤及30cm厚的冻土层，沟渠成型好。该机结构简单、操作方便。其铲刀是直接关系到工程进度及施
The newly developed GC65-4 trenching machine developed by Tianjin Construction Machinery Research Institute is a highly efficient earthworking machine which is suitable for excavation of various ditches such as water conservancy construction, farmland infrastructures, communication optical fiber cables and gas supply and water supply . It can excavate all levels of soil and 30cm thick permafrost layer, forming a good trench. The machine structure is simple, easy to operate. The blade is directly related to the progress of the project and facilities