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由林业部林业机械研究設計所和常州林业机械厂联合設計,常州林业机械厂試制的J33絞盘机(图1)主要是为我国南方和西南林区循环增力式和循环牵引式集运材架空
By the Ministry of Forestry Forestry Machinery Research and Design Institute and Changzhou Forestry Machinery Plant joint design, Changzhou Forestry Machinery Factory trial production of the J33 winch (Figure 1) is mainly for the south and southwest of China’s circulation of renewable energy-based and cyclic traction type overhead material overhead